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Finding the Fourth Proportional to 121,005.33, 166,962.88 and 70,694.61

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Solution

The fourth proportional to 121,005.33, 166,962.88 and 70,694.61 is: 97,544.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,005.33 : 166,962.88 = 70,694.61 : x
  2. Step 2: Convert to fraction form
    121,005.33/166,962.88 = 70,694.61/x
  3. Step 3: Cross multiply
    121,005.33x = 166,962.88 × 70,694.61
  4. Step 4: Simplify right side
    121,005.33x = 11,803,375,686.08
  5. Step 5: Solve for x
    x = 11,803,375,686.08/121,005.33
  6. Step 6: Final answer
    x = 97,544.26

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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.