Home / 99,546.45-137,402.33-65,579.73

Finding the Fourth Proportional to 99,546.45, 137,402.33 and 65,579.73

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Solution

The fourth proportional to 99,546.45, 137,402.33 and 65,579.73 is: 90,518.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,546.45 : 137,402.33 = 65,579.73 : x
  2. Step 2: Convert to fraction form
    99,546.45/137,402.33 = 65,579.73/x
  3. Step 3: Cross multiply
    99,546.45x = 137,402.33 × 65,579.73
  4. Step 4: Simplify right side
    99,546.45x = 9,010,807,374.87
  5. Step 5: Solve for x
    x = 9,010,807,374.87/99,546.45
  6. Step 6: Final answer
    x = 90,518.62

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1.5x scale

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.