Home / 155,279.29-214,293.02-87,317.66

Finding the Fourth Proportional to 155,279.29, 214,293.02 and 87,317.66

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Solution

The fourth proportional to 155,279.29, 214,293.02 and 87,317.66 is: 120,502.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,279.29 : 214,293.02 = 87,317.66 : x
  2. Step 2: Convert to fraction form
    155,279.29/214,293.02 = 87,317.66/x
  3. Step 3: Cross multiply
    155,279.29x = 214,293.02 × 87,317.66
  4. Step 4: Simplify right side
    155,279.29x = 18,711,565,060.73
  5. Step 5: Solve for x
    x = 18,711,565,060.73/155,279.29
  6. Step 6: Final answer
    x = 120,502.64

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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.