Home / 154,359.20-231,668.40-70,248.80

Finding the Fourth Proportional to 154,359.20, 231,668.40 and 70,248.80

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Solution

The fourth proportional to 154,359.20, 231,668.40 and 70,248.80 is: 105,432.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,359.20 : 231,668.40 = 70,248.80 : x
  2. Step 2: Convert to fraction form
    154,359.20/231,668.40 = 70,248.80/x
  3. Step 3: Cross multiply
    154,359.20x = 231,668.40 × 70,248.80
  4. Step 4: Simplify right side
    154,359.20x = 16,274,427,097.92
  5. Step 5: Solve for x
    x = 16,274,427,097.92/154,359.20
  6. Step 6: Final answer
    x = 105,432.18

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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.