Home / 230,948.12-318,702.28-128,970.76

Finding the Fourth Proportional to 230,948.12, 318,702.28 and 128,970.76

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Solution

The fourth proportional to 230,948.12, 318,702.28 and 128,970.76 is: 177,976.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,948.12 : 318,702.28 = 128,970.76 : x
  2. Step 2: Convert to fraction form
    230,948.12/318,702.28 = 128,970.76/x
  3. Step 3: Cross multiply
    230,948.12x = 318,702.28 × 128,970.76
  4. Step 4: Simplify right side
    230,948.12x = 41,103,275,265.33
  5. Step 5: Solve for x
    x = 41,103,275,265.33/230,948.12
  6. Step 6: Final answer
    x = 177,976.23

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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.