Home / 136,006.16-204,353.68-86,109.72

Finding the Fourth Proportional to 136,006.16, 204,353.68 and 86,109.72

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Solution

The fourth proportional to 136,006.16, 204,353.68 and 86,109.72 is: 129,382.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,006.16 : 204,353.68 = 86,109.72 : x
  2. Step 2: Convert to fraction form
    136,006.16/204,353.68 = 86,109.72/x
  3. Step 3: Cross multiply
    136,006.16x = 204,353.68 × 86,109.72
  4. Step 4: Simplify right side
    136,006.16x = 17,596,838,165.77
  5. Step 5: Solve for x
    x = 17,596,838,165.77/136,006.16
  6. Step 6: Final answer
    x = 129,382.66

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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.