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Finding the Fourth Proportional to 134,680.60, 202,239.60 and 90,503.20

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Solution

The fourth proportional to 134,680.60, 202,239.60 and 90,503.20 is: 135,901.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,680.60 : 202,239.60 = 90,503.20 : x
  2. Step 2: Convert to fraction form
    134,680.60/202,239.60 = 90,503.20/x
  3. Step 3: Cross multiply
    134,680.60x = 202,239.60 × 90,503.20
  4. Step 4: Simplify right side
    134,680.60x = 18,303,330,966.72
  5. Step 5: Solve for x
    x = 18,303,330,966.72/134,680.60
  6. Step 6: Final answer
    x = 135,901.76

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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.