Home / 230,730.18-318,407.05-128,754.56

Finding the Fourth Proportional to 230,730.18, 318,407.05 and 128,754.56

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Solution

The fourth proportional to 230,730.18, 318,407.05 and 128,754.56 is: 177,680.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,730.18 : 318,407.05 = 128,754.56 : x
  2. Step 2: Convert to fraction form
    230,730.18/318,407.05 = 128,754.56/x
  3. Step 3: Cross multiply
    230,730.18x = 318,407.05 × 128,754.56
  4. Step 4: Simplify right side
    230,730.18x = 40,996,359,386.58
  5. Step 5: Solve for x
    x = 40,996,359,386.58/230,730.18
  6. Step 6: Final answer
    x = 177,680.96

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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.