Home / 89,724.60-134,586.90-72,228.60

Finding the Fourth Proportional to 89,724.60, 134,586.90 and 72,228.60

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Solution

The fourth proportional to 89,724.60, 134,586.90 and 72,228.60 is: 108,342.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,724.60 : 134,586.90 = 72,228.60 : x
  2. Step 2: Convert to fraction form
    89,724.60/134,586.90 = 72,228.60/x
  3. Step 3: Cross multiply
    89,724.60x = 134,586.90 × 72,228.60
  4. Step 4: Simplify right side
    89,724.60x = 9,721,023,365.34
  5. Step 5: Solve for x
    x = 9,721,023,365.34/89,724.60
  6. Step 6: Final answer
    x = 108,342.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.