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Finding the Fourth Proportional to 112,876.35, 155,770.86 and 61,888.97

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Solution

The fourth proportional to 112,876.35, 155,770.86 and 61,888.97 is: 85,407.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,876.35 : 155,770.86 = 61,888.97 : x
  2. Step 2: Convert to fraction form
    112,876.35/155,770.86 = 61,888.97/x
  3. Step 3: Cross multiply
    112,876.35x = 155,770.86 × 61,888.97
  4. Step 4: Simplify right side
    112,876.35x = 9,640,497,302.56
  5. Step 5: Solve for x
    x = 9,640,497,302.56/112,876.35
  6. Step 6: Final answer
    x = 85,407.59

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1.5x scale

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.