Home / 158,330.48-218,491.17-86,708.66

Finding the Fourth Proportional to 158,330.48, 218,491.17 and 86,708.66

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Solution

The fourth proportional to 158,330.48, 218,491.17 and 86,708.66 is: 119,655.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,330.48 : 218,491.17 = 86,708.66 : x
  2. Step 2: Convert to fraction form
    158,330.48/218,491.17 = 86,708.66/x
  3. Step 3: Cross multiply
    158,330.48x = 218,491.17 × 86,708.66
  4. Step 4: Simplify right side
    158,330.48x = 18,945,076,572.53
  5. Step 5: Solve for x
    x = 18,945,076,572.53/158,330.48
  6. Step 6: Final answer
    x = 119,655.27

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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.