Home / 90,638.40-135,957.60-89,982.30

Finding the Fourth Proportional to 90,638.40, 135,957.60 and 89,982.30

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Solution

The fourth proportional to 90,638.40, 135,957.60 and 89,982.30 is: 134,973.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,638.40 : 135,957.60 = 89,982.30 : x
  2. Step 2: Convert to fraction form
    90,638.40/135,957.60 = 89,982.30/x
  3. Step 3: Cross multiply
    90,638.40x = 135,957.60 × 89,982.30
  4. Step 4: Simplify right side
    90,638.40x = 12,233,777,550.48
  5. Step 5: Solve for x
    x = 12,233,777,550.48/90,638.40
  6. Step 6: Final answer
    x = 134,973.45

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Similar ratio
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1.5x scale

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.