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Finding the Fourth Proportional to 156,994.33, 216,657.88 and 89,939.29

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Solution

The fourth proportional to 156,994.33, 216,657.88 and 89,939.29 is: 124,119.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,994.33 : 216,657.88 = 89,939.29 : x
  2. Step 2: Convert to fraction form
    156,994.33/216,657.88 = 89,939.29/x
  3. Step 3: Cross multiply
    156,994.33x = 216,657.88 × 89,939.29
  4. Step 4: Simplify right side
    156,994.33x = 19,486,055,900.11
  5. Step 5: Solve for x
    x = 19,486,055,900.11/156,994.33
  6. Step 6: Final answer
    x = 124,119.49

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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.