Home / 155,972.51-215,189.71-127,242.51

Finding the Fourth Proportional to 155,972.51, 215,189.71 and 127,242.51

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Solution

The fourth proportional to 155,972.51, 215,189.71 and 127,242.51 is: 175,551.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,972.51 : 215,189.71 = 127,242.51 : x
  2. Step 2: Convert to fraction form
    155,972.51/215,189.71 = 127,242.51/x
  3. Step 3: Cross multiply
    155,972.51x = 215,189.71 × 127,242.51
  4. Step 4: Simplify right side
    155,972.51x = 27,381,278,719.85
  5. Step 5: Solve for x
    x = 27,381,278,719.85/155,972.51
  6. Step 6: Final answer
    x = 175,551.95

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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.