Home / 143,854.56-198,390.60-90,145.44

Finding the Fourth Proportional to 143,854.56, 198,390.60 and 90,145.44

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Solution

The fourth proportional to 143,854.56, 198,390.60 and 90,145.44 is: 124,320.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,854.56 : 198,390.60 = 90,145.44 : x
  2. Step 2: Convert to fraction form
    143,854.56/198,390.60 = 90,145.44/x
  3. Step 3: Cross multiply
    143,854.56x = 198,390.60 × 90,145.44
  4. Step 4: Simplify right side
    143,854.56x = 17,884,007,928.86
  5. Step 5: Solve for x
    x = 17,884,007,928.86/143,854.56
  6. Step 6: Final answer
    x = 124,320.06

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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.