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Finding the Fourth Proportional to 160,881.88, 221,871.54 and 100,458.04

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Solution

The fourth proportional to 160,881.88, 221,871.54 and 100,458.04 is: 138,541.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,881.88 : 221,871.54 = 100,458.04 : x
  2. Step 2: Convert to fraction form
    160,881.88/221,871.54 = 100,458.04/x
  3. Step 3: Cross multiply
    160,881.88x = 221,871.54 × 100,458.04
  4. Step 4: Simplify right side
    160,881.88x = 22,288,780,040.18
  5. Step 5: Solve for x
    x = 22,288,780,040.18/160,881.88
  6. Step 6: Final answer
    x = 138,541.27

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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.