Home / 207,615.08-286,508.80-112,121.78

Finding the Fourth Proportional to 207,615.08, 286,508.80 and 112,121.78

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Solution

The fourth proportional to 207,615.08, 286,508.80 and 112,121.78 is: 154,728.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,615.08 : 286,508.80 = 112,121.78 : x
  2. Step 2: Convert to fraction form
    207,615.08/286,508.80 = 112,121.78/x
  3. Step 3: Cross multiply
    207,615.08x = 286,508.80 × 112,121.78
  4. Step 4: Simplify right side
    207,615.08x = 32,123,876,641.66
  5. Step 5: Solve for x
    x = 32,123,876,641.66/207,615.08
  6. Step 6: Final answer
    x = 154,728.05

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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.