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Finding the Fourth Proportional to 153,265.68, 229,599.60 and 86,503.84

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Solution

The fourth proportional to 153,265.68, 229,599.60 and 86,503.84 is: 129,587.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,265.68 : 229,599.60 = 86,503.84 : x
  2. Step 2: Convert to fraction form
    153,265.68/229,599.60 = 86,503.84/x
  3. Step 3: Cross multiply
    153,265.68x = 229,599.60 × 86,503.84
  4. Step 4: Simplify right side
    153,265.68x = 19,861,247,062.46
  5. Step 5: Solve for x
    x = 19,861,247,062.46/153,265.68
  6. Step 6: Final answer
    x = 129,587.05

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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.