Home / 129,327,980,677.18-178,470,713,964.36-72,236,124,352.78

Finding the Fourth Proportional to 129,327,980,677.18, 178,470,713,964.36 and 72,236,124,352.78

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Solution

The fourth proportional to 129,327,980,677.18, 178,470,713,964.36 and 72,236,124,352.78 is: 99,684,790,713.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,327,980,677.18 : 178,470,713,964.36 = 72,236,124,352.78 : x
  2. Step 2: Convert to fraction form
    129,327,980,677.18/178,470,713,964.36 = 72,236,124,352.78/x
  3. Step 3: Cross multiply
    129,327,980,677.18x = 178,470,713,964.36 × 72,236,124,352.78
  4. Step 4: Simplify right side
    129,327,980,677.18x = 12,892,032,687,258,938,114,048
  5. Step 5: Solve for x
    x = 12,892,032,687,258,938,114,048/129,327,980,677.18
  6. Step 6: Final answer
    x = 99,684,790,713.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.