Home / 207,609.09-286,500.54-112,115.78

Finding the Fourth Proportional to 207,609.09, 286,500.54 and 112,115.78

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Solution

The fourth proportional to 207,609.09, 286,500.54 and 112,115.78 is: 154,719.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,609.09 : 286,500.54 = 112,115.78 : x
  2. Step 2: Convert to fraction form
    207,609.09/286,500.54 = 112,115.78/x
  3. Step 3: Cross multiply
    207,609.09x = 286,500.54 × 112,115.78
  4. Step 4: Simplify right side
    207,609.09x = 32,121,230,080.02
  5. Step 5: Solve for x
    x = 32,121,230,080.02/207,609.09
  6. Step 6: Final answer
    x = 154,719.77

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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.