Home / 151,658.76-209,291.22-83,678.70

Finding the Fourth Proportional to 151,658.76, 209,291.22 and 83,678.70

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Solution

The fourth proportional to 151,658.76, 209,291.22 and 83,678.70 is: 115,477.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,658.76 : 209,291.22 = 83,678.70 : x
  2. Step 2: Convert to fraction form
    151,658.76/209,291.22 = 83,678.70/x
  3. Step 3: Cross multiply
    151,658.76x = 209,291.22 × 83,678.70
  4. Step 4: Simplify right side
    151,658.76x = 17,513,217,211.01
  5. Step 5: Solve for x
    x = 17,513,217,211.01/151,658.76
  6. Step 6: Final answer
    x = 115,477.78

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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.