Home / 90,944.98-136,236.63-71,130.76

Finding the Fourth Proportional to 90,944.98, 136,236.63 and 71,130.76

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Solution

The fourth proportional to 90,944.98, 136,236.63 and 71,130.76 is: 106,554.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,944.98 : 136,236.63 = 71,130.76 : x
  2. Step 2: Convert to fraction form
    90,944.98/136,236.63 = 71,130.76/x
  3. Step 3: Cross multiply
    90,944.98x = 136,236.63 × 71,130.76
  4. Step 4: Simplify right side
    90,944.98x = 9,690,614,957.89
  5. Step 5: Solve for x
    x = 9,690,614,957.89/90,944.98
  6. Step 6: Final answer
    x = 106,554.70

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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.