Home / 201,543.90-278,122.24-109,663.56

Finding the Fourth Proportional to 201,543.90, 278,122.24 and 109,663.56

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Solution

The fourth proportional to 201,543.90, 278,122.24 and 109,663.56 is: 151,331.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,543.90 : 278,122.24 = 109,663.56 : x
  2. Step 2: Convert to fraction form
    201,543.90/278,122.24 = 109,663.56/x
  3. Step 3: Cross multiply
    201,543.90x = 278,122.24 × 109,663.56
  4. Step 4: Simplify right side
    201,543.90x = 30,499,874,405.26
  5. Step 5: Solve for x
    x = 30,499,874,405.26/201,543.90
  6. Step 6: Final answer
    x = 151,331.17

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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.