Home / 136,001.70-204,002.55-86,138.10

Finding the Fourth Proportional to 136,001.70, 204,002.55 and 86,138.10

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Solution

The fourth proportional to 136,001.70, 204,002.55 and 86,138.10 is: 129,207.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,001.70 : 204,002.55 = 86,138.10 : x
  2. Step 2: Convert to fraction form
    136,001.70/204,002.55 = 86,138.10/x
  3. Step 3: Cross multiply
    136,001.70x = 204,002.55 × 86,138.10
  4. Step 4: Simplify right side
    136,001.70x = 17,572,392,052.16
  5. Step 5: Solve for x
    x = 17,572,392,052.16/136,001.70
  6. Step 6: Final answer
    x = 129,207.15

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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.