Home / 156,486.31-215,948.97-84,864.89

Finding the Fourth Proportional to 156,486.31, 215,948.97 and 84,864.89

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Solution

The fourth proportional to 156,486.31, 215,948.97 and 84,864.89 is: 117,112.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,486.31 : 215,948.97 = 84,864.89 : x
  2. Step 2: Convert to fraction form
    156,486.31/215,948.97 = 84,864.89/x
  3. Step 3: Cross multiply
    156,486.31x = 215,948.97 × 84,864.89
  4. Step 4: Simplify right side
    156,486.31x = 18,326,486,124.54
  5. Step 5: Solve for x
    x = 18,326,486,124.54/156,486.31
  6. Step 6: Final answer
    x = 117,112.39

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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.