Home / 99,534.80-149,302.20-89,693.30

Finding the Fourth Proportional to 99,534.80, 149,302.20 and 89,693.30

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Solution

The fourth proportional to 99,534.80, 149,302.20 and 89,693.30 is: 134,539.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,534.80 : 149,302.20 = 89,693.30 : x
  2. Step 2: Convert to fraction form
    99,534.80/149,302.20 = 89,693.30/x
  3. Step 3: Cross multiply
    99,534.80x = 149,302.20 × 89,693.30
  4. Step 4: Simplify right side
    99,534.80x = 13,391,407,015.26
  5. Step 5: Solve for x
    x = 13,391,407,015.26/99,534.80
  6. Step 6: Final answer
    x = 134,539.95

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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.