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Finding the Fourth Proportional to 116,751.24, 160,988.58 and 78,959.88

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Solution

The fourth proportional to 116,751.24, 160,988.58 and 78,959.88 is: 108,877.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,751.24 : 160,988.58 = 78,959.88 : x
  2. Step 2: Convert to fraction form
    116,751.24/160,988.58 = 78,959.88/x
  3. Step 3: Cross multiply
    116,751.24x = 160,988.58 × 78,959.88
  4. Step 4: Simplify right side
    116,751.24x = 12,711,638,958.17
  5. Step 5: Solve for x
    x = 12,711,638,958.17/116,751.24
  6. Step 6: Final answer
    x = 108,877.98

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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.