Home / 109,859.25-151,459.16-87,273.21

Finding the Fourth Proportional to 109,859.25, 151,459.16 and 87,273.21

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Solution

The fourth proportional to 109,859.25, 151,459.16 and 87,273.21 is: 120,320.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,859.25 : 151,459.16 = 87,273.21 : x
  2. Step 2: Convert to fraction form
    109,859.25/151,459.16 = 87,273.21/x
  3. Step 3: Cross multiply
    109,859.25x = 151,459.16 × 87,273.21
  4. Step 4: Simplify right side
    109,859.25x = 13,218,326,640.74
  5. Step 5: Solve for x
    x = 13,218,326,640.74/109,859.25
  6. Step 6: Final answer
    x = 120,320.56

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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.