Home / 129,021,760.80-193,532,641.20-119,168,013.60

Finding the Fourth Proportional to 129,021,760.80, 193,532,641.20 and 119,168,013.60

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Solution

The fourth proportional to 129,021,760.80, 193,532,641.20 and 119,168,013.60 is: 178,752,020.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,021,760.80 : 193,532,641.20 = 119,168,013.60 : x
  2. Step 2: Convert to fraction form
    129,021,760.80/193,532,641.20 = 119,168,013.60/x
  3. Step 3: Cross multiply
    129,021,760.80x = 193,532,641.20 × 119,168,013.60
  4. Step 4: Simplify right side
    129,021,760.80x = 23,062,900,418,565,516
  5. Step 5: Solve for x
    x = 23,062,900,418,565,516/129,021,760.80
  6. Step 6: Final answer
    x = 178,752,020.40

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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.