Home / 119,917-165,488.10-66,201.88

Finding the Fourth Proportional to 119,917, 165,488.10 and 66,201.88

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Solution

The fourth proportional to 119,917, 165,488.10 and 66,201.88 is: 91,360.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,917 : 165,488.10 = 66,201.88 : x
  2. Step 2: Convert to fraction form
    119,917/165,488.10 = 66,201.88/x
  3. Step 3: Cross multiply
    119,917x = 165,488.10 × 66,201.88
  4. Step 4: Simplify right side
    119,917x = 10,955,623,337.63
  5. Step 5: Solve for x
    x = 10,955,623,337.63/119,917
  6. Step 6: Final answer
    x = 91,360.05

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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.