Home / 151,305.12-208,799.36-83,320.72

Finding the Fourth Proportional to 151,305.12, 208,799.36 and 83,320.72

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Solution

The fourth proportional to 151,305.12, 208,799.36 and 83,320.72 is: 114,981.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,305.12 : 208,799.36 = 83,320.72 : x
  2. Step 2: Convert to fraction form
    151,305.12/208,799.36 = 83,320.72/x
  3. Step 3: Cross multiply
    151,305.12x = 208,799.36 × 83,320.72
  4. Step 4: Simplify right side
    151,305.12x = 17,397,313,010.74
  5. Step 5: Solve for x
    x = 17,397,313,010.74/151,305.12
  6. Step 6: Final answer
    x = 114,981.65

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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.