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Finding the Fourth Proportional to 125,171.28, 187,741.16 and 40,924.40

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Solution

The fourth proportional to 125,171.28, 187,741.16 and 40,924.40 is: 61,381.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,171.28 : 187,741.16 = 40,924.40 : x
  2. Step 2: Convert to fraction form
    125,171.28/187,741.16 = 40,924.40/x
  3. Step 3: Cross multiply
    125,171.28x = 187,741.16 × 40,924.40
  4. Step 4: Simplify right side
    125,171.28x = 7,683,194,328.30
  5. Step 5: Solve for x
    x = 7,683,194,328.30/125,171.28
  6. Step 6: Final answer
    x = 61,381.45

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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.