Home / 129,185.24-178,282.98-86,089.88

Finding the Fourth Proportional to 129,185.24, 178,282.98 and 86,089.88

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Solution

The fourth proportional to 129,185.24, 178,282.98 and 86,089.88 is: 118,808.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,185.24 : 178,282.98 = 86,089.88 : x
  2. Step 2: Convert to fraction form
    129,185.24/178,282.98 = 86,089.88/x
  3. Step 3: Cross multiply
    129,185.24x = 178,282.98 × 86,089.88
  4. Step 4: Simplify right side
    129,185.24x = 15,348,360,354.24
  5. Step 5: Solve for x
    x = 15,348,360,354.24/129,185.24
  6. Step 6: Final answer
    x = 118,808.93

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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.