Home / 136,013.20-204,364.16-86,116.72

Finding the Fourth Proportional to 136,013.20, 204,364.16 and 86,116.72

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Solution

The fourth proportional to 136,013.20, 204,364.16 and 86,116.72 is: 129,393.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,013.20 : 204,364.16 = 86,116.72 : x
  2. Step 2: Convert to fraction form
    136,013.20/204,364.16 = 86,116.72/x
  3. Step 3: Cross multiply
    136,013.20x = 204,364.16 × 86,116.72
  4. Step 4: Simplify right side
    136,013.20x = 17,599,171,144.76
  5. Step 5: Solve for x
    x = 17,599,171,144.76/136,013.20
  6. Step 6: Final answer
    x = 129,393.11

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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.