Home / 90,459.42-135,693.39-74,635.13

Finding the Fourth Proportional to 90,459.42, 135,693.39 and 74,635.13

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Solution

The fourth proportional to 90,459.42, 135,693.39 and 74,635.13 is: 111,956.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,459.42 : 135,693.39 = 74,635.13 : x
  2. Step 2: Convert to fraction form
    90,459.42/135,693.39 = 74,635.13/x
  3. Step 3: Cross multiply
    90,459.42x = 135,693.39 × 74,635.13
  4. Step 4: Simplify right side
    90,459.42x = 10,127,493,124.32
  5. Step 5: Solve for x
    x = 10,127,493,124.32/90,459.42
  6. Step 6: Final answer
    x = 111,956.20

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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.