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Finding the Fourth Proportional to 124,809.20, 187,386.60 and 98,543.60

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Solution

The fourth proportional to 124,809.20, 187,386.60 and 98,543.60 is: 147,951.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,809.20 : 187,386.60 = 98,543.60 : x
  2. Step 2: Convert to fraction form
    124,809.20/187,386.60 = 98,543.60/x
  3. Step 3: Cross multiply
    124,809.20x = 187,386.60 × 98,543.60
  4. Step 4: Simplify right side
    124,809.20x = 18,465,750,155.76
  5. Step 5: Solve for x
    x = 18,465,750,155.76/124,809.20
  6. Step 6: Final answer
    x = 147,951.83

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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.