Home / 109,640.92-151,308.39-61,902.76

Finding the Fourth Proportional to 109,640.92, 151,308.39 and 61,902.76

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Solution

The fourth proportional to 109,640.92, 151,308.39 and 61,902.76 is: 85,428.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,640.92 : 151,308.39 = 61,902.76 : x
  2. Step 2: Convert to fraction form
    109,640.92/151,308.39 = 61,902.76/x
  3. Step 3: Cross multiply
    109,640.92x = 151,308.39 × 61,902.76
  4. Step 4: Simplify right side
    109,640.92x = 9,366,406,952.16
  5. Step 5: Solve for x
    x = 9,366,406,952.16/109,640.92
  6. Step 6: Final answer
    x = 85,428.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.