Home / 113,187.28-156,266.84-74,979.36

Finding the Fourth Proportional to 113,187.28, 156,266.84 and 74,979.36

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Solution

The fourth proportional to 113,187.28, 156,266.84 and 74,979.36 is: 103,516.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,187.28 : 156,266.84 = 74,979.36 : x
  2. Step 2: Convert to fraction form
    113,187.28/156,266.84 = 74,979.36/x
  3. Step 3: Cross multiply
    113,187.28x = 156,266.84 × 74,979.36
  4. Step 4: Simplify right side
    113,187.28x = 11,716,787,652.42
  5. Step 5: Solve for x
    x = 11,716,787,652.42/113,187.28
  6. Step 6: Final answer
    x = 103,516.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.