Home / 159,531.60-220,152.48-87,909.84

Finding the Fourth Proportional to 159,531.60, 220,152.48 and 87,909.84

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Solution

The fourth proportional to 159,531.60, 220,152.48 and 87,909.84 is: 121,314.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,531.60 : 220,152.48 = 87,909.84 : x
  2. Step 2: Convert to fraction form
    159,531.60/220,152.48 = 87,909.84/x
  3. Step 3: Cross multiply
    159,531.60x = 220,152.48 × 87,909.84
  4. Step 4: Simplify right side
    159,531.60x = 19,353,569,292.40
  5. Step 5: Solve for x
    x = 19,353,569,292.40/159,531.60
  6. Step 6: Final answer
    x = 121,314.96

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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.