Home / 81,178.40-111,596.02-69,806.24

Finding the Fourth Proportional to 81,178.40, 111,596.02 and 69,806.24

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Solution

The fourth proportional to 81,178.40, 111,596.02 and 69,806.24 is: 95,962.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,178.40 : 111,596.02 = 69,806.24 : x
  2. Step 2: Convert to fraction form
    81,178.40/111,596.02 = 69,806.24/x
  3. Step 3: Cross multiply
    81,178.40x = 111,596.02 × 69,806.24
  4. Step 4: Simplify right side
    81,178.40x = 7,790,098,555.16
  5. Step 5: Solve for x
    x = 7,790,098,555.16/81,178.40
  6. Step 6: Final answer
    x = 95,962.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.