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Finding the Fourth Proportional to 117,854.88, 162,643.35 and 66,869.73

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Solution

The fourth proportional to 117,854.88, 162,643.35 and 66,869.73 is: 92,282.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,854.88 : 162,643.35 = 66,869.73 : x
  2. Step 2: Convert to fraction form
    117,854.88/162,643.35 = 66,869.73/x
  3. Step 3: Cross multiply
    117,854.88x = 162,643.35 × 66,869.73
  4. Step 4: Simplify right side
    117,854.88x = 10,875,916,900.80
  5. Step 5: Solve for x
    x = 10,875,916,900.80/117,854.88
  6. Step 6: Final answer
    x = 92,282.28

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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.