Home / 155,042.28-213,945.21-93,811.28

Finding the Fourth Proportional to 155,042.28, 213,945.21 and 93,811.28

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Solution

The fourth proportional to 155,042.28, 213,945.21 and 93,811.28 is: 129,451.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,042.28 : 213,945.21 = 93,811.28 : x
  2. Step 2: Convert to fraction form
    155,042.28/213,945.21 = 93,811.28/x
  3. Step 3: Cross multiply
    155,042.28x = 213,945.21 × 93,811.28
  4. Step 4: Simplify right side
    155,042.28x = 20,070,472,930.24
  5. Step 5: Solve for x
    x = 20,070,472,930.24/155,042.28
  6. Step 6: Final answer
    x = 129,451.61

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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.