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Finding the Fourth Proportional to 158,001.80, 218,042.44 and 86,381.80

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Solution

The fourth proportional to 158,001.80, 218,042.44 and 86,381.80 is: 119,206.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,001.80 : 218,042.44 = 86,381.80 : x
  2. Step 2: Convert to fraction form
    158,001.80/218,042.44 = 86,381.80/x
  3. Step 3: Cross multiply
    158,001.80x = 218,042.44 × 86,381.80
  4. Step 4: Simplify right side
    158,001.80x = 18,834,897,682.53
  5. Step 5: Solve for x
    x = 18,834,897,682.53/158,001.80
  6. Step 6: Final answer
    x = 119,206.86

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1.5x scale

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.