Home / 113,219.60-169,721.40-42,123.20

Finding the Fourth Proportional to 113,219.60, 169,721.40 and 42,123.20

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Solution

The fourth proportional to 113,219.60, 169,721.40 and 42,123.20 is: 63,144.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,219.60 : 169,721.40 = 42,123.20 : x
  2. Step 2: Convert to fraction form
    113,219.60/169,721.40 = 42,123.20/x
  3. Step 3: Cross multiply
    113,219.60x = 169,721.40 × 42,123.20
  4. Step 4: Simplify right side
    113,219.60x = 7,149,208,476.48
  5. Step 5: Solve for x
    x = 7,149,208,476.48/113,219.60
  6. Step 6: Final answer
    x = 63,144.62

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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.