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Finding the Fourth Proportional to 125,133.39, 187,700.10 and 31,639.14

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Solution

The fourth proportional to 125,133.39, 187,700.10 and 31,639.14 is: 47,458.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,133.39 : 187,700.10 = 31,639.14 : x
  2. Step 2: Convert to fraction form
    125,133.39/187,700.10 = 31,639.14/x
  3. Step 3: Cross multiply
    125,133.39x = 187,700.10 × 31,639.14
  4. Step 4: Simplify right side
    125,133.39x = 5,938,669,741.91
  5. Step 5: Solve for x
    x = 5,938,669,741.91/125,133.39
  6. Step 6: Final answer
    x = 47,458.71

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1.5x scale

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.