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Finding the Fourth Proportional to 126,458.69, 175,312.02 and 119,717.15

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Solution

The fourth proportional to 126,458.69, 175,312.02 and 119,717.15 is: 165,966.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,458.69 : 175,312.02 = 119,717.15 : x
  2. Step 2: Convert to fraction form
    126,458.69/175,312.02 = 119,717.15/x
  3. Step 3: Cross multiply
    126,458.69x = 175,312.02 × 119,717.15
  4. Step 4: Simplify right side
    126,458.69x = 20,987,854,967.52
  5. Step 5: Solve for x
    x = 20,987,854,967.52/126,458.69
  6. Step 6: Final answer
    x = 165,966.10

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.