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Finding the Fourth Proportional to 118,833.76, 163,995.10 and 67,854.78

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Solution

The fourth proportional to 118,833.76, 163,995.10 and 67,854.78 is: 93,642.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,833.76 : 163,995.10 = 67,854.78 : x
  2. Step 2: Convert to fraction form
    118,833.76/163,995.10 = 67,854.78/x
  3. Step 3: Cross multiply
    118,833.76x = 163,995.10 × 67,854.78
  4. Step 4: Simplify right side
    118,833.76x = 11,127,851,431.58
  5. Step 5: Solve for x
    x = 11,127,851,431.58/118,833.76
  6. Step 6: Final answer
    x = 93,642.17

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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.