Home / 129,487,792.80-194,231,689.20-64,990,538.40

Finding the Fourth Proportional to 129,487,792.80, 194,231,689.20 and 64,990,538.40

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Solution

The fourth proportional to 129,487,792.80, 194,231,689.20 and 64,990,538.40 is: 97,485,807.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,487,792.80 : 194,231,689.20 = 64,990,538.40 : x
  2. Step 2: Convert to fraction form
    129,487,792.80/194,231,689.20 = 64,990,538.40/x
  3. Step 3: Cross multiply
    129,487,792.80x = 194,231,689.20 × 64,990,538.40
  4. Step 4: Simplify right side
    129,487,792.80x = 12,623,222,055,449,464
  5. Step 5: Solve for x
    x = 12,623,222,055,449,464/129,487,792.80
  6. Step 6: Final answer
    x = 97,485,807.60

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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.