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Finding the Fourth Proportional to 123,925.70, 185,683.35 and 71,243.30

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Solution

The fourth proportional to 123,925.70, 185,683.35 and 71,243.30 is: 106,746.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,925.70 : 185,683.35 = 71,243.30 : x
  2. Step 2: Convert to fraction form
    123,925.70/185,683.35 = 71,243.30/x
  3. Step 3: Cross multiply
    123,925.70x = 185,683.35 × 71,243.30
  4. Step 4: Simplify right side
    123,925.70x = 13,228,694,609.06
  5. Step 5: Solve for x
    x = 13,228,694,609.06/123,925.70
  6. Step 6: Final answer
    x = 106,746.98

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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.