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Finding the Fourth Proportional to 261,652.08, 392,516.52 and 84,100.56

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Solution

The fourth proportional to 261,652.08, 392,516.52 and 84,100.56 is: 126,163.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,652.08 : 392,516.52 = 84,100.56 : x
  2. Step 2: Convert to fraction form
    261,652.08/392,516.52 = 84,100.56/x
  3. Step 3: Cross multiply
    261,652.08x = 392,516.52 × 84,100.56
  4. Step 4: Simplify right side
    261,652.08x = 33,010,859,141.25
  5. Step 5: Solve for x
    x = 33,010,859,141.25/261,652.08
  6. Step 6: Final answer
    x = 126,163.18

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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.