Home / 103,211.40-154,817.22-28,332.56

Finding the Fourth Proportional to 103,211.40, 154,817.22 and 28,332.56

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Solution

The fourth proportional to 103,211.40, 154,817.22 and 28,332.56 is: 42,498.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,211.40 : 154,817.22 = 28,332.56 : x
  2. Step 2: Convert to fraction form
    103,211.40/154,817.22 = 28,332.56/x
  3. Step 3: Cross multiply
    103,211.40x = 154,817.22 × 28,332.56
  4. Step 4: Simplify right side
    103,211.40x = 4,386,368,174.68
  5. Step 5: Solve for x
    x = 4,386,368,174.68/103,211.40
  6. Step 6: Final answer
    x = 42,498.87

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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.