Home / 129,792,030.60-194,688,045.90-78,731,704.20

Finding the Fourth Proportional to 129,792,030.60, 194,688,045.90 and 78,731,704.20

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Solution

The fourth proportional to 129,792,030.60, 194,688,045.90 and 78,731,704.20 is: 118,097,556.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,792,030.60 : 194,688,045.90 = 78,731,704.20 : x
  2. Step 2: Convert to fraction form
    129,792,030.60/194,688,045.90 = 78,731,704.20/x
  3. Step 3: Cross multiply
    129,792,030.60x = 194,688,045.90 × 78,731,704.20
  4. Step 4: Simplify right side
    129,792,030.60x = 15,328,121,641,074,824
  5. Step 5: Solve for x
    x = 15,328,121,641,074,824/129,792,030.60
  6. Step 6: Final answer
    x = 118,097,556.30

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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.