Home / 120,077.40-165,498.24-87,759.12

Finding the Fourth Proportional to 120,077.40, 165,498.24 and 87,759.12

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Solution

The fourth proportional to 120,077.40, 165,498.24 and 87,759.12 is: 120,955.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,077.40 : 165,498.24 = 87,759.12 : x
  2. Step 2: Convert to fraction form
    120,077.40/165,498.24 = 87,759.12/x
  3. Step 3: Cross multiply
    120,077.40x = 165,498.24 × 87,759.12
  4. Step 4: Simplify right side
    120,077.40x = 14,523,979,903.95
  5. Step 5: Solve for x
    x = 14,523,979,903.95/120,077.40
  6. Step 6: Final answer
    x = 120,955.15

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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.