Home / 129,792,002.10-194,688,003.15-78,731,675.70

Finding the Fourth Proportional to 129,792,002.10, 194,688,003.15 and 78,731,675.70

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Solution

The fourth proportional to 129,792,002.10, 194,688,003.15 and 78,731,675.70 is: 118,097,513.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,792,002.10 : 194,688,003.15 = 78,731,675.70 : x
  2. Step 2: Convert to fraction form
    129,792,002.10/194,688,003.15 = 78,731,675.70/x
  3. Step 3: Cross multiply
    129,792,002.10x = 194,688,003.15 × 78,731,675.70
  4. Step 4: Simplify right side
    129,792,002.10x = 15,328,112,726,686,380
  5. Step 5: Solve for x
    x = 15,328,112,726,686,380/129,792,002.10
  6. Step 6: Final answer
    x = 118,097,513.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.