Home / 103,478.40-142,805.30-58,154.04

Finding the Fourth Proportional to 103,478.40, 142,805.30 and 58,154.04

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Solution

The fourth proportional to 103,478.40, 142,805.30 and 58,154.04 is: 80,255.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,478.40 : 142,805.30 = 58,154.04 : x
  2. Step 2: Convert to fraction form
    103,478.40/142,805.30 = 58,154.04/x
  3. Step 3: Cross multiply
    103,478.40x = 142,805.30 × 58,154.04
  4. Step 4: Simplify right side
    103,478.40x = 8,304,704,837.64
  5. Step 5: Solve for x
    x = 8,304,704,837.64/103,478.40
  6. Step 6: Final answer
    x = 80,255.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.