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Finding the Fourth Proportional to 156,421.27, 215,862.42 and 84,802.42

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Solution

The fourth proportional to 156,421.27, 215,862.42 and 84,802.42 is: 117,027.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,421.27 : 215,862.42 = 84,802.42 : x
  2. Step 2: Convert to fraction form
    156,421.27/215,862.42 = 84,802.42/x
  3. Step 3: Cross multiply
    156,421.27x = 215,862.42 × 84,802.42
  4. Step 4: Simplify right side
    156,421.27x = 18,305,655,603.06
  5. Step 5: Solve for x
    x = 18,305,655,603.06/156,421.27
  6. Step 6: Final answer
    x = 117,027.92

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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.