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Finding the Fourth Proportional to 154,335.65, 212,889.96 and 101,947.95

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Solution

The fourth proportional to 154,335.65, 212,889.96 and 101,947.95 is: 140,626.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,335.65 : 212,889.96 = 101,947.95 : x
  2. Step 2: Convert to fraction form
    154,335.65/212,889.96 = 101,947.95/x
  3. Step 3: Cross multiply
    154,335.65x = 212,889.96 × 101,947.95
  4. Step 4: Simplify right side
    154,335.65x = 21,703,694,997.58
  5. Step 5: Solve for x
    x = 21,703,694,997.58/154,335.65
  6. Step 6: Final answer
    x = 140,626.58

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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.