Home / 90,687.42-135,420.03-74,080.26

Finding the Fourth Proportional to 90,687.42, 135,420.03 and 74,080.26

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Solution

The fourth proportional to 90,687.42, 135,420.03 and 74,080.26 is: 110,621.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,687.42 : 135,420.03 = 74,080.26 : x
  2. Step 2: Convert to fraction form
    90,687.42/135,420.03 = 74,080.26/x
  3. Step 3: Cross multiply
    90,687.42x = 135,420.03 × 74,080.26
  4. Step 4: Simplify right side
    90,687.42x = 10,031,951,031.61
  5. Step 5: Solve for x
    x = 10,031,951,031.61/90,687.42
  6. Step 6: Final answer
    x = 110,621.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.