Home / 136,920.66-205,400.43-42,158.72

Finding the Fourth Proportional to 136,920.66, 205,400.43 and 42,158.72

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Solution

The fourth proportional to 136,920.66, 205,400.43 and 42,158.72 is: 63,244.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,920.66 : 205,400.43 = 42,158.72 : x
  2. Step 2: Convert to fraction form
    136,920.66/205,400.43 = 42,158.72/x
  3. Step 3: Cross multiply
    136,920.66x = 205,400.43 × 42,158.72
  4. Step 4: Simplify right side
    136,920.66x = 8,659,419,270.63
  5. Step 5: Solve for x
    x = 8,659,419,270.63/136,920.66
  6. Step 6: Final answer
    x = 63,244.07

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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.