Home / 156,329.10-215,727.93-91,789.74

Finding the Fourth Proportional to 156,329.10, 215,727.93 and 91,789.74

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Solution

The fourth proportional to 156,329.10, 215,727.93 and 91,789.74 is: 126,666.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,329.10 : 215,727.93 = 91,789.74 : x
  2. Step 2: Convert to fraction form
    156,329.10/215,727.93 = 91,789.74/x
  3. Step 3: Cross multiply
    156,329.10x = 215,727.93 × 91,789.74
  4. Step 4: Simplify right side
    156,329.10x = 19,801,610,605.44
  5. Step 5: Solve for x
    x = 19,801,610,605.44/156,329.10
  6. Step 6: Final answer
    x = 126,666.18

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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.