Home / 156,320.61-215,723.43-84,701.15

Finding the Fourth Proportional to 156,320.61, 215,723.43 and 84,701.15

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Solution

The fourth proportional to 156,320.61, 215,723.43 and 84,701.15 is: 116,888.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,320.61 : 215,723.43 = 84,701.15 : x
  2. Step 2: Convert to fraction form
    156,320.61/215,723.43 = 84,701.15/x
  3. Step 3: Cross multiply
    156,320.61x = 215,723.43 × 84,701.15
  4. Step 4: Simplify right side
    156,320.61x = 18,272,023,142.25
  5. Step 5: Solve for x
    x = 18,272,023,142.25/156,320.61
  6. Step 6: Final answer
    x = 116,888.13

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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.