Home / 113,211.60-169,709.40-42,115.20

Finding the Fourth Proportional to 113,211.60, 169,709.40 and 42,115.20

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Solution

The fourth proportional to 113,211.60, 169,709.40 and 42,115.20 is: 63,132.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,211.60 : 169,709.40 = 42,115.20 : x
  2. Step 2: Convert to fraction form
    113,211.60/169,709.40 = 42,115.20/x
  3. Step 3: Cross multiply
    113,211.60x = 169,709.40 × 42,115.20
  4. Step 4: Simplify right side
    113,211.60x = 7,147,345,322.88
  5. Step 5: Solve for x
    x = 7,147,345,322.88/113,211.60
  6. Step 6: Final answer
    x = 63,132.62

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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.