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Finding the Fourth Proportional to 153,305.60, 229,659.52 and 86,543.84

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Solution

The fourth proportional to 153,305.60, 229,659.52 and 86,543.84 is: 129,647.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,305.60 : 229,659.52 = 86,543.84 : x
  2. Step 2: Convert to fraction form
    153,305.60/229,659.52 = 86,543.84/x
  3. Step 3: Cross multiply
    153,305.60x = 229,659.52 × 86,543.84
  4. Step 4: Simplify right side
    153,305.60x = 19,875,616,753.36
  5. Step 5: Solve for x
    x = 19,875,616,753.36/153,305.60
  6. Step 6: Final answer
    x = 129,647.04

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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.