Home / 91,173.57-125,758.08-79,216.35

Finding the Fourth Proportional to 91,173.57, 125,758.08 and 79,216.35

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Solution

The fourth proportional to 91,173.57, 125,758.08 and 79,216.35 is: 109,265.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,173.57 : 125,758.08 = 79,216.35 : x
  2. Step 2: Convert to fraction form
    91,173.57/125,758.08 = 79,216.35/x
  3. Step 3: Cross multiply
    91,173.57x = 125,758.08 × 79,216.35
  4. Step 4: Simplify right side
    91,173.57x = 9,962,096,080.61
  5. Step 5: Solve for x
    x = 9,962,096,080.61/91,173.57
  6. Step 6: Final answer
    x = 109,265.17

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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.