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Finding the Fourth Proportional to 156,422.75, 215,862.11 and 84,800.93

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Solution

The fourth proportional to 156,422.75, 215,862.11 and 84,800.93 is: 117,024.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,422.75 : 215,862.11 = 84,800.93 : x
  2. Step 2: Convert to fraction form
    156,422.75/215,862.11 = 84,800.93/x
  3. Step 3: Cross multiply
    156,422.75x = 215,862.11 × 84,800.93
  4. Step 4: Simplify right side
    156,422.75x = 18,305,307,679.76
  5. Step 5: Solve for x
    x = 18,305,307,679.76/156,422.75
  6. Step 6: Final answer
    x = 117,024.59

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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.