Home / 230,947.12-318,700.90-128,969.76

Finding the Fourth Proportional to 230,947.12, 318,700.90 and 128,969.76

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Solution

The fourth proportional to 230,947.12, 318,700.90 and 128,969.76 is: 177,974.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,947.12 : 318,700.90 = 128,969.76 : x
  2. Step 2: Convert to fraction form
    230,947.12/318,700.90 = 128,969.76/x
  3. Step 3: Cross multiply
    230,947.12x = 318,700.90 × 128,969.76
  4. Step 4: Simplify right side
    230,947.12x = 41,102,778,584.78
  5. Step 5: Solve for x
    x = 41,102,778,584.78/230,947.12
  6. Step 6: Final answer
    x = 177,974.85

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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.