Home / 91,554.30-126,357.74-66,142.89

Finding the Fourth Proportional to 91,554.30, 126,357.74 and 66,142.89

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Solution

The fourth proportional to 91,554.30, 126,357.74 and 66,142.89 is: 91,286.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,554.30 : 126,357.74 = 66,142.89 : x
  2. Step 2: Convert to fraction form
    91,554.30/126,357.74 = 66,142.89/x
  3. Step 3: Cross multiply
    91,554.30x = 126,357.74 × 66,142.89
  4. Step 4: Simplify right side
    91,554.30x = 8,357,665,766.75
  5. Step 5: Solve for x
    x = 8,357,665,766.75/91,554.30
  6. Step 6: Final answer
    x = 91,286.44

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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.