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Finding the Fourth Proportional to 158,617.56, 218,898.36 and 87,000.60

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Solution

The fourth proportional to 158,617.56, 218,898.36 and 87,000.60 is: 120,064.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,617.56 : 218,898.36 = 87,000.60 : x
  2. Step 2: Convert to fraction form
    158,617.56/218,898.36 = 87,000.60/x
  3. Step 3: Cross multiply
    158,617.56x = 218,898.36 × 87,000.60
  4. Step 4: Simplify right side
    158,617.56x = 19,044,288,659.02
  5. Step 5: Solve for x
    x = 19,044,288,659.02/158,617.56
  6. Step 6: Final answer
    x = 120,064.19

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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.