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Finding the Fourth Proportional to 136,031.60, 203,874.16 and 76,900.16

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Solution

The fourth proportional to 136,031.60, 203,874.16 and 76,900.16 is: 115,252.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,031.60 : 203,874.16 = 76,900.16 : x
  2. Step 2: Convert to fraction form
    136,031.60/203,874.16 = 76,900.16/x
  3. Step 3: Cross multiply
    136,031.60x = 203,874.16 × 76,900.16
  4. Step 4: Simplify right side
    136,031.60x = 15,677,955,523.87
  5. Step 5: Solve for x
    x = 15,677,955,523.87/136,031.60
  6. Step 6: Final answer
    x = 115,252.31

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1.5x scale

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.