Home / 207,915.12-286,921.85-126,214.88

Finding the Fourth Proportional to 207,915.12, 286,921.85 and 126,214.88

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Solution

The fourth proportional to 207,915.12, 286,921.85 and 126,214.88 is: 174,175.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,915.12 : 286,921.85 = 126,214.88 : x
  2. Step 2: Convert to fraction form
    207,915.12/286,921.85 = 126,214.88/x
  3. Step 3: Cross multiply
    207,915.12x = 286,921.85 × 126,214.88
  4. Step 4: Simplify right side
    207,915.12x = 36,213,804,801.44
  5. Step 5: Solve for x
    x = 36,213,804,801.44/207,915.12
  6. Step 6: Final answer
    x = 174,175.91

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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.