Home / 129,792,007.10-194,688,010.65-78,731,680.70

Finding the Fourth Proportional to 129,792,007.10, 194,688,010.65 and 78,731,680.70

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Solution

The fourth proportional to 129,792,007.10, 194,688,010.65 and 78,731,680.70 is: 118,097,521.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,792,007.10 : 194,688,010.65 = 78,731,680.70 : x
  2. Step 2: Convert to fraction form
    129,792,007.10/194,688,010.65 = 78,731,680.70/x
  3. Step 3: Cross multiply
    129,792,007.10x = 194,688,010.65 × 78,731,680.70
  4. Step 4: Simplify right side
    129,792,007.10x = 15,328,114,290,614,000
  5. Step 5: Solve for x
    x = 15,328,114,290,614,000/129,792,007.10
  6. Step 6: Final answer
    x = 118,097,521.05

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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.