Home / 127,972.71-191,876.84-53,144.51

Finding the Fourth Proportional to 127,972.71, 191,876.84 and 53,144.51

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Solution

The fourth proportional to 127,972.71, 191,876.84 and 53,144.51 is: 79,682.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,972.71 : 191,876.84 = 53,144.51 : x
  2. Step 2: Convert to fraction form
    127,972.71/191,876.84 = 53,144.51/x
  3. Step 3: Cross multiply
    127,972.71x = 191,876.84 × 53,144.51
  4. Step 4: Simplify right side
    127,972.71x = 10,197,199,417.04
  5. Step 5: Solve for x
    x = 10,197,199,417.04/127,972.71
  6. Step 6: Final answer
    x = 79,682.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.