Home / 91,554.06-126,357.40-66,142.64

Finding the Fourth Proportional to 91,554.06, 126,357.40 and 66,142.64

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Solution

The fourth proportional to 91,554.06, 126,357.40 and 66,142.64 is: 91,286.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,554.06 : 126,357.40 = 66,142.64 : x
  2. Step 2: Convert to fraction form
    91,554.06/126,357.40 = 66,142.64/x
  3. Step 3: Cross multiply
    91,554.06x = 126,357.40 × 66,142.64
  4. Step 4: Simplify right side
    91,554.06x = 8,357,611,387.75
  5. Step 5: Solve for x
    x = 8,357,611,387.75/91,554.06
  6. Step 6: Final answer
    x = 91,286.08

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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.