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Finding the Fourth Proportional to 113,119.60, 169,679.40 and 66,425.20

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Solution

The fourth proportional to 113,119.60, 169,679.40 and 66,425.20 is: 99,637.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,119.60 : 169,679.40 = 66,425.20 : x
  2. Step 2: Convert to fraction form
    113,119.60/169,679.40 = 66,425.20/x
  3. Step 3: Cross multiply
    113,119.60x = 169,679.40 × 66,425.20
  4. Step 4: Simplify right side
    113,119.60x = 11,270,988,080.88
  5. Step 5: Solve for x
    x = 11,270,988,080.88/113,119.60
  6. Step 6: Final answer
    x = 99,637.80

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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.