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Finding the Fourth Proportional to 125,167.70, 187,775.70 and 40,905.12

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Solution

The fourth proportional to 125,167.70, 187,775.70 and 40,905.12 is: 61,365.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,167.70 : 187,775.70 = 40,905.12 : x
  2. Step 2: Convert to fraction form
    125,167.70/187,775.70 = 40,905.12/x
  3. Step 3: Cross multiply
    125,167.70x = 187,775.70 × 40,905.12
  4. Step 4: Simplify right side
    125,167.70x = 7,680,987,541.58
  5. Step 5: Solve for x
    x = 7,680,987,541.58/125,167.70
  6. Step 6: Final answer
    x = 61,365.57

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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.