Home / 135,309.20-186,801.76-81,607.76

Finding the Fourth Proportional to 135,309.20, 186,801.76 and 81,607.76

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Solution

The fourth proportional to 135,309.20, 186,801.76 and 81,607.76 is: 112,663.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,309.20 : 186,801.76 = 81,607.76 : x
  2. Step 2: Convert to fraction form
    135,309.20/186,801.76 = 81,607.76/x
  3. Step 3: Cross multiply
    135,309.20x = 186,801.76 × 81,607.76
  4. Step 4: Simplify right side
    135,309.20x = 15,244,473,197.66
  5. Step 5: Solve for x
    x = 15,244,473,197.66/135,309.20
  6. Step 6: Final answer
    x = 112,663.98

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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.