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Finding the Fourth Proportional to 112,239.88, 154,894.76 and 61,255.40

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Solution

The fourth proportional to 112,239.88, 154,894.76 and 61,255.40 is: 84,534.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,239.88 : 154,894.76 = 61,255.40 : x
  2. Step 2: Convert to fraction form
    112,239.88/154,894.76 = 61,255.40/x
  3. Step 3: Cross multiply
    112,239.88x = 154,894.76 × 61,255.40
  4. Step 4: Simplify right side
    112,239.88x = 9,488,140,481.70
  5. Step 5: Solve for x
    x = 9,488,140,481.70/112,239.88
  6. Step 6: Final answer
    x = 84,534.49

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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.