Home / 129,686.16-179,026.64-91,476.88

Finding the Fourth Proportional to 129,686.16, 179,026.64 and 91,476.88

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Solution

The fourth proportional to 129,686.16, 179,026.64 and 91,476.88 is: 126,280.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,686.16 : 179,026.64 = 91,476.88 : x
  2. Step 2: Convert to fraction form
    129,686.16/179,026.64 = 91,476.88/x
  3. Step 3: Cross multiply
    129,686.16x = 179,026.64 × 91,476.88
  4. Step 4: Simplify right side
    129,686.16x = 16,376,798,464.08
  5. Step 5: Solve for x
    x = 16,376,798,464.08/129,686.16
  6. Step 6: Final answer
    x = 126,280.23

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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.