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Finding the Fourth Proportional to 147,287.70, 220,931.55 and 84,906.90

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Solution

The fourth proportional to 147,287.70, 220,931.55 and 84,906.90 is: 127,360.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,287.70 : 220,931.55 = 84,906.90 : x
  2. Step 2: Convert to fraction form
    147,287.70/220,931.55 = 84,906.90/x
  3. Step 3: Cross multiply
    147,287.70x = 220,931.55 × 84,906.90
  4. Step 4: Simplify right side
    147,287.70x = 18,758,613,022.70
  5. Step 5: Solve for x
    x = 18,758,613,022.70/147,287.70
  6. Step 6: Final answer
    x = 127,360.35

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1.5x scale

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.