Home / 136,956.15-205,143.57-89,403.21

Finding the Fourth Proportional to 136,956.15, 205,143.57 and 89,403.21

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Solution

The fourth proportional to 136,956.15, 205,143.57 and 89,403.21 is: 133,915.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,956.15 : 205,143.57 = 89,403.21 : x
  2. Step 2: Convert to fraction form
    136,956.15/205,143.57 = 89,403.21/x
  3. Step 3: Cross multiply
    136,956.15x = 205,143.57 × 89,403.21
  4. Step 4: Simplify right side
    136,956.15x = 18,340,493,668.86
  5. Step 5: Solve for x
    x = 18,340,493,668.86/136,956.15
  6. Step 6: Final answer
    x = 133,915.08

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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.