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Finding the Fourth Proportional to 144,173.52, 215,970.30 and 71,908.56

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Solution

The fourth proportional to 144,173.52, 215,970.30 and 71,908.56 is: 107,718.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,173.52 : 215,970.30 = 71,908.56 : x
  2. Step 2: Convert to fraction form
    144,173.52/215,970.30 = 71,908.56/x
  3. Step 3: Cross multiply
    144,173.52x = 215,970.30 × 71,908.56
  4. Step 4: Simplify right side
    144,173.52x = 15,530,113,275.77
  5. Step 5: Solve for x
    x = 15,530,113,275.77/144,173.52
  6. Step 6: Final answer
    x = 107,718.21

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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.