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Finding the Fourth Proportional to 125,242.62, 172,841.88 and 74,285.52

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Solution

The fourth proportional to 125,242.62, 172,841.88 and 74,285.52 is: 102,518.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,242.62 : 172,841.88 = 74,285.52 : x
  2. Step 2: Convert to fraction form
    125,242.62/172,841.88 = 74,285.52/x
  3. Step 3: Cross multiply
    125,242.62x = 172,841.88 × 74,285.52
  4. Step 4: Simplify right side
    125,242.62x = 12,839,648,933.58
  5. Step 5: Solve for x
    x = 12,839,648,933.58/125,242.62
  6. Step 6: Final answer
    x = 102,518.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.