Home / 129,327,980,676.11-178,470,713,962.90-72,236,124,351.71

Finding the Fourth Proportional to 129,327,980,676.11, 178,470,713,962.90 and 72,236,124,351.71

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Solution

The fourth proportional to 129,327,980,676.11, 178,470,713,962.90 and 72,236,124,351.71 is: 99,684,790,712.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,327,980,676.11 : 178,470,713,962.90 = 72,236,124,351.71 : x
  2. Step 2: Convert to fraction form
    129,327,980,676.11/178,470,713,962.90 = 72,236,124,351.71/x
  3. Step 3: Cross multiply
    129,327,980,676.11x = 178,470,713,962.90 × 72,236,124,351.71
  4. Step 4: Simplify right side
    129,327,980,676.11x = 12,892,032,686,962,868,486,144
  5. Step 5: Solve for x
    x = 12,892,032,686,962,868,486,144/129,327,980,676.11
  6. Step 6: Final answer
    x = 99,684,790,712.46

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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.