Home / 88,141.72-131,920.21-80,262.45

Finding the Fourth Proportional to 88,141.72, 131,920.21 and 80,262.45

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Solution

The fourth proportional to 88,141.72, 131,920.21 and 80,262.45 is: 120,127.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,141.72 : 131,920.21 = 80,262.45 : x
  2. Step 2: Convert to fraction form
    88,141.72/131,920.21 = 80,262.45/x
  3. Step 3: Cross multiply
    88,141.72x = 131,920.21 × 80,262.45
  4. Step 4: Simplify right side
    88,141.72x = 10,588,239,259.11
  5. Step 5: Solve for x
    x = 10,588,239,259.11/88,141.72
  6. Step 6: Final answer
    x = 120,127.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.