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Finding the Fourth Proportional to 145,607.92, 218,321.20 and 61,324.58

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Solution

The fourth proportional to 145,607.92, 218,321.20 and 61,324.58 is: 91,948.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,607.92 : 218,321.20 = 61,324.58 : x
  2. Step 2: Convert to fraction form
    145,607.92/218,321.20 = 61,324.58/x
  3. Step 3: Cross multiply
    145,607.92x = 218,321.20 × 61,324.58
  4. Step 4: Simplify right side
    145,607.92x = 13,388,455,895.10
  5. Step 5: Solve for x
    x = 13,388,455,895.10/145,607.92
  6. Step 6: Final answer
    x = 91,948.68

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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.