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Finding the Fourth Proportional to 145,753.48, 218,136.42 and 89,629.14

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Solution

The fourth proportional to 145,753.48, 218,136.42 and 89,629.14 is: 134,140.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,753.48 : 218,136.42 = 89,629.14 : x
  2. Step 2: Convert to fraction form
    145,753.48/218,136.42 = 89,629.14/x
  3. Step 3: Cross multiply
    145,753.48x = 218,136.42 × 89,629.14
  4. Step 4: Simplify right side
    145,753.48x = 19,551,378,188.45
  5. Step 5: Solve for x
    x = 19,551,378,188.45/145,753.48
  6. Step 6: Final answer
    x = 134,140.04

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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.