Home / 129,327,980,675.17-178,470,713,961.60-72,236,124,350.78

Finding the Fourth Proportional to 129,327,980,675.17, 178,470,713,961.60 and 72,236,124,350.78

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Solution

The fourth proportional to 129,327,980,675.17, 178,470,713,961.60 and 72,236,124,350.78 is: 99,684,790,711.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,327,980,675.17 : 178,470,713,961.60 = 72,236,124,350.78 : x
  2. Step 2: Convert to fraction form
    129,327,980,675.17/178,470,713,961.60 = 72,236,124,350.78/x
  3. Step 3: Cross multiply
    129,327,980,675.17x = 178,470,713,961.60 × 72,236,124,350.78
  4. Step 4: Simplify right side
    129,327,980,675.17x = 12,892,032,686,701,913,571,328
  5. Step 5: Solve for x
    x = 12,892,032,686,701,913,571,328/129,327,980,675.17
  6. Step 6: Final answer
    x = 99,684,790,711.17

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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.