Home / 120,116.91-165,760.41-69,139.65

Finding the Fourth Proportional to 120,116.91, 165,760.41 and 69,139.65

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Solution

The fourth proportional to 120,116.91, 165,760.41 and 69,139.65 is: 95,412.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,116.91 : 165,760.41 = 69,139.65 : x
  2. Step 2: Convert to fraction form
    120,116.91/165,760.41 = 69,139.65/x
  3. Step 3: Cross multiply
    120,116.91x = 165,760.41 × 69,139.65
  4. Step 4: Simplify right side
    120,116.91x = 11,460,616,731.26
  5. Step 5: Solve for x
    x = 11,460,616,731.26/120,116.91
  6. Step 6: Final answer
    x = 95,412.18

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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.