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Finding the Fourth Proportional to 147,388.80, 203,338.80 and 90,701.76

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Solution

The fourth proportional to 147,388.80, 203,338.80 and 90,701.76 is: 125,132.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,388.80 : 203,338.80 = 90,701.76 : x
  2. Step 2: Convert to fraction form
    147,388.80/203,338.80 = 90,701.76/x
  3. Step 3: Cross multiply
    147,388.80x = 203,338.80 × 90,701.76
  4. Step 4: Simplify right side
    147,388.80x = 18,443,187,036.29
  5. Step 5: Solve for x
    x = 18,443,187,036.29/147,388.80
  6. Step 6: Final answer
    x = 125,132.89

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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.