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Finding the Fourth Proportional to 145,899, 218,629.68 and 112,569.12

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Solution

The fourth proportional to 145,899, 218,629.68 and 112,569.12 is: 168,684.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,899 : 218,629.68 = 112,569.12 : x
  2. Step 2: Convert to fraction form
    145,899/218,629.68 = 112,569.12/x
  3. Step 3: Cross multiply
    145,899x = 218,629.68 × 112,569.12
  4. Step 4: Simplify right side
    145,899x = 24,610,950,683.48
  5. Step 5: Solve for x
    x = 24,610,950,683.48/145,899
  6. Step 6: Final answer
    x = 168,684.85

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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.