Home / 113,218.60-169,719.90-42,122.20

Finding the Fourth Proportional to 113,218.60, 169,719.90 and 42,122.20

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Solution

The fourth proportional to 113,218.60, 169,719.90 and 42,122.20 is: 63,143.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,218.60 : 169,719.90 = 42,122.20 : x
  2. Step 2: Convert to fraction form
    113,218.60/169,719.90 = 42,122.20/x
  3. Step 3: Cross multiply
    113,218.60x = 169,719.90 × 42,122.20
  4. Step 4: Simplify right side
    113,218.60x = 7,148,975,571.78
  5. Step 5: Solve for x
    x = 7,148,975,571.78/113,218.60
  6. Step 6: Final answer
    x = 63,143.12

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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.