Home / 103,045.38-154,339.68-79,177.20

Finding the Fourth Proportional to 103,045.38, 154,339.68 and 79,177.20

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Solution

The fourth proportional to 103,045.38, 154,339.68 and 79,177.20 is: 118,590.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,045.38 : 154,339.68 = 79,177.20 : x
  2. Step 2: Convert to fraction form
    103,045.38/154,339.68 = 79,177.20/x
  3. Step 3: Cross multiply
    103,045.38x = 154,339.68 × 79,177.20
  4. Step 4: Simplify right side
    103,045.38x = 12,220,183,711.30
  5. Step 5: Solve for x
    x = 12,220,183,711.30/103,045.38
  6. Step 6: Final answer
    x = 118,590.31

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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.