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Finding the Fourth Proportional to 147,775.52, 203,920.80 and 80,707.52

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Solution

The fourth proportional to 147,775.52, 203,920.80 and 80,707.52 is: 111,371.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,775.52 : 203,920.80 = 80,707.52 : x
  2. Step 2: Convert to fraction form
    147,775.52/203,920.80 = 80,707.52/x
  3. Step 3: Cross multiply
    147,775.52x = 203,920.80 × 80,707.52
  4. Step 4: Simplify right side
    147,775.52x = 16,457,942,044.42
  5. Step 5: Solve for x
    x = 16,457,942,044.42/147,775.52
  6. Step 6: Final answer
    x = 111,371.23

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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.