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Finding the Fourth Proportional to 153,957.60, 231,013.20 and 87,448.80

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Solution

The fourth proportional to 153,957.60, 231,013.20 and 87,448.80 is: 131,216.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,957.60 : 231,013.20 = 87,448.80 : x
  2. Step 2: Convert to fraction form
    153,957.60/231,013.20 = 87,448.80/x
  3. Step 3: Cross multiply
    153,957.60x = 231,013.20 × 87,448.80
  4. Step 4: Simplify right side
    153,957.60x = 20,201,827,124.16
  5. Step 5: Solve for x
    x = 20,201,827,124.16/153,957.60
  6. Step 6: Final answer
    x = 131,216.82

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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.