Home / 113,081.60-169,622.40-66,387.20

Finding the Fourth Proportional to 113,081.60, 169,622.40 and 66,387.20

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Solution

The fourth proportional to 113,081.60, 169,622.40 and 66,387.20 is: 99,580.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,081.60 : 169,622.40 = 66,387.20 : x
  2. Step 2: Convert to fraction form
    113,081.60/169,622.40 = 66,387.20/x
  3. Step 3: Cross multiply
    113,081.60x = 169,622.40 × 66,387.20
  4. Step 4: Simplify right side
    113,081.60x = 11,260,756,193.28
  5. Step 5: Solve for x
    x = 11,260,756,193.28/113,081.60
  6. Step 6: Final answer
    x = 99,580.80

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1.5x scale

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.