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Finding the Fourth Proportional to 112,043.52, 154,612.80 and 61,742.52

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Solution

The fourth proportional to 112,043.52, 154,612.80 and 61,742.52 is: 85,200.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,043.52 : 154,612.80 = 61,742.52 : x
  2. Step 2: Convert to fraction form
    112,043.52/154,612.80 = 61,742.52/x
  3. Step 3: Cross multiply
    112,043.52x = 154,612.80 × 61,742.52
  4. Step 4: Simplify right side
    112,043.52x = 9,546,183,896.26
  5. Step 5: Solve for x
    x = 9,546,183,896.26/112,043.52
  6. Step 6: Final answer
    x = 85,200.68

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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.