Home / 120,141.10-165,788.06-66,422.91

Finding the Fourth Proportional to 120,141.10, 165,788.06 and 66,422.91

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Solution

The fourth proportional to 120,141.10, 165,788.06 and 66,422.91 is: 91,659.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,141.10 : 165,788.06 = 66,422.91 : x
  2. Step 2: Convert to fraction form
    120,141.10/165,788.06 = 66,422.91/x
  3. Step 3: Cross multiply
    120,141.10x = 165,788.06 × 66,422.91
  4. Step 4: Simplify right side
    120,141.10x = 11,012,125,056.34
  5. Step 5: Solve for x
    x = 11,012,125,056.34/120,141.10
  6. Step 6: Final answer
    x = 91,659.93

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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.