Home / 103,302.18-155,036.31-53,396.91

Finding the Fourth Proportional to 103,302.18, 155,036.31 and 53,396.91

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Solution

The fourth proportional to 103,302.18, 155,036.31 and 53,396.91 is: 80,138.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,302.18 : 155,036.31 = 53,396.91 : x
  2. Step 2: Convert to fraction form
    103,302.18/155,036.31 = 53,396.91/x
  3. Step 3: Cross multiply
    103,302.18x = 155,036.31 × 53,396.91
  4. Step 4: Simplify right side
    103,302.18x = 8,278,459,891.80
  5. Step 5: Solve for x
    x = 8,278,459,891.80/103,302.18
  6. Step 6: Final answer
    x = 80,138.29

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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.