Home / 207,977.64-287,055-135,254.04

Finding the Fourth Proportional to 207,977.64, 287,055 and 135,254.04

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Solution

The fourth proportional to 207,977.64, 287,055 and 135,254.04 is: 186,680.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,977.64 : 287,055 = 135,254.04 : x
  2. Step 2: Convert to fraction form
    207,977.64/287,055 = 135,254.04/x
  3. Step 3: Cross multiply
    207,977.64x = 287,055 × 135,254.04
  4. Step 4: Simplify right side
    207,977.64x = 38,825,348,452.20
  5. Step 5: Solve for x
    x = 38,825,348,452.20/207,977.64
  6. Step 6: Final answer
    x = 186,680.40

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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.