Home / 103,964.85-155,838.74-75,432.81

Finding the Fourth Proportional to 103,964.85, 155,838.74 and 75,432.81

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Solution

The fourth proportional to 103,964.85, 155,838.74 and 75,432.81 is: 113,070.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,964.85 : 155,838.74 = 75,432.81 : x
  2. Step 2: Convert to fraction form
    103,964.85/155,838.74 = 75,432.81/x
  3. Step 3: Cross multiply
    103,964.85x = 155,838.74 × 75,432.81
  4. Step 4: Simplify right side
    103,964.85x = 11,755,353,687.90
  5. Step 5: Solve for x
    x = 11,755,353,687.90/103,964.85
  6. Step 6: Final answer
    x = 113,070.46

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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.