Home / 113,531.04-170,121.36-71,890.56

Finding the Fourth Proportional to 113,531.04, 170,121.36 and 71,890.56

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Solution

The fourth proportional to 113,531.04, 170,121.36 and 71,890.56 is: 107,724.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,531.04 : 170,121.36 = 71,890.56 : x
  2. Step 2: Convert to fraction form
    113,531.04/170,121.36 = 71,890.56/x
  3. Step 3: Cross multiply
    113,531.04x = 170,121.36 × 71,890.56
  4. Step 4: Simplify right side
    113,531.04x = 12,230,119,838.36
  5. Step 5: Solve for x
    x = 12,230,119,838.36/113,531.04
  6. Step 6: Final answer
    x = 107,724.90

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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.