Home / 103,239.35-154,857.20-28,359.20

Finding the Fourth Proportional to 103,239.35, 154,857.20 and 28,359.20

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Solution

The fourth proportional to 103,239.35, 154,857.20 and 28,359.20 is: 42,538.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,239.35 : 154,857.20 = 28,359.20 : x
  2. Step 2: Convert to fraction form
    103,239.35/154,857.20 = 28,359.20/x
  3. Step 3: Cross multiply
    103,239.35x = 154,857.20 × 28,359.20
  4. Step 4: Simplify right side
    103,239.35x = 4,391,625,390.16
  5. Step 5: Solve for x
    x = 4,391,625,390.16/103,239.35
  6. Step 6: Final answer
    x = 42,538.29

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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.