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Finding the Fourth Proportional to 124,155.72, 186,328.62 and 88,129.62

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Solution

The fourth proportional to 124,155.72, 186,328.62 and 88,129.62 is: 132,261.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,155.72 : 186,328.62 = 88,129.62 : x
  2. Step 2: Convert to fraction form
    124,155.72/186,328.62 = 88,129.62/x
  3. Step 3: Cross multiply
    124,155.72x = 186,328.62 × 88,129.62
  4. Step 4: Simplify right side
    124,155.72x = 16,421,070,475.72
  5. Step 5: Solve for x
    x = 16,421,070,475.72/124,155.72
  6. Step 6: Final answer
    x = 132,261.89

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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.