Home / 147,405.29-203,419.35-83,743.20

Finding the Fourth Proportional to 147,405.29, 203,419.35 and 83,743.20

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Solution

The fourth proportional to 147,405.29, 203,419.35 and 83,743.20 is: 115,565.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,405.29 : 203,419.35 = 83,743.20 : x
  2. Step 2: Convert to fraction form
    147,405.29/203,419.35 = 83,743.20/x
  3. Step 3: Cross multiply
    147,405.29x = 203,419.35 × 83,743.20
  4. Step 4: Simplify right side
    147,405.29x = 17,034,987,310.92
  5. Step 5: Solve for x
    x = 17,034,987,310.92/147,405.29
  6. Step 6: Final answer
    x = 115,565.65

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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.