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Finding the Fourth Proportional to 158,250, 218,385 and 87,594

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Solution

The fourth proportional to 158,250, 218,385 and 87,594 is: 120,879.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,250 : 218,385 = 87,594 : x
  2. Step 2: Convert to fraction form
    158,250/218,385 = 87,594/x
  3. Step 3: Cross multiply
    158,250x = 218,385 × 87,594
  4. Step 4: Simplify right side
    158,250x = 19,129,215,690
  5. Step 5: Solve for x
    x = 19,129,215,690/158,250
  6. Step 6: Final answer
    x = 120,879.72

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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.