Home / 136,865.90-205,145.52-89,572.02

Finding the Fourth Proportional to 136,865.90, 205,145.52 and 89,572.02

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Solution

The fourth proportional to 136,865.90, 205,145.52 and 89,572.02 is: 134,257.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,865.90 : 205,145.52 = 89,572.02 : x
  2. Step 2: Convert to fraction form
    136,865.90/205,145.52 = 89,572.02/x
  3. Step 3: Cross multiply
    136,865.90x = 205,145.52 × 89,572.02
  4. Step 4: Simplify right side
    136,865.90x = 18,375,298,620.35
  5. Step 5: Solve for x
    x = 18,375,298,620.35/136,865.90
  6. Step 6: Final answer
    x = 134,257.68

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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.