Home / 142,251.06-213,407.40-75,681.56

Finding the Fourth Proportional to 142,251.06, 213,407.40 and 75,681.56

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Solution

The fourth proportional to 142,251.06, 213,407.40 and 75,681.56 is: 113,538.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,251.06 : 213,407.40 = 75,681.56 : x
  2. Step 2: Convert to fraction form
    142,251.06/213,407.40 = 75,681.56/x
  3. Step 3: Cross multiply
    142,251.06x = 213,407.40 × 75,681.56
  4. Step 4: Simplify right side
    142,251.06x = 16,151,004,947.54
  5. Step 5: Solve for x
    x = 16,151,004,947.54/142,251.06
  6. Step 6: Final answer
    x = 113,538.73

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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.