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Finding the Fourth Proportional to 124,699.20, 187,221.60 and 98,433.60

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Solution

The fourth proportional to 124,699.20, 187,221.60 and 98,433.60 is: 147,786.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,699.20 : 187,221.60 = 98,433.60 : x
  2. Step 2: Convert to fraction form
    124,699.20/187,221.60 = 98,433.60/x
  3. Step 3: Cross multiply
    124,699.20x = 187,221.60 × 98,433.60
  4. Step 4: Simplify right side
    124,699.20x = 18,428,896,085.76
  5. Step 5: Solve for x
    x = 18,428,896,085.76/124,699.20
  6. Step 6: Final answer
    x = 147,786.80

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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.