Home / 103,338.18-154,604.40-90,586.71

Finding the Fourth Proportional to 103,338.18, 154,604.40 and 90,586.71

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Solution

The fourth proportional to 103,338.18, 154,604.40 and 90,586.71 is: 135,526.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,338.18 : 154,604.40 = 90,586.71 : x
  2. Step 2: Convert to fraction form
    103,338.18/154,604.40 = 90,586.71/x
  3. Step 3: Cross multiply
    103,338.18x = 154,604.40 × 90,586.71
  4. Step 4: Simplify right side
    103,338.18x = 14,005,103,947.52
  5. Step 5: Solve for x
    x = 14,005,103,947.52/103,338.18
  6. Step 6: Final answer
    x = 135,526.91

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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.