Home / 120,530.44-165,981.25-112,828.70

Finding the Fourth Proportional to 120,530.44, 165,981.25 and 112,828.70

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Solution

The fourth proportional to 120,530.44, 165,981.25 and 112,828.70 is: 155,375.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,530.44 : 165,981.25 = 112,828.70 : x
  2. Step 2: Convert to fraction form
    120,530.44/165,981.25 = 112,828.70/x
  3. Step 3: Cross multiply
    120,530.44x = 165,981.25 × 112,828.70
  4. Step 4: Simplify right side
    120,530.44x = 18,727,448,641.22
  5. Step 5: Solve for x
    x = 18,727,448,641.22/120,530.44
  6. Step 6: Final answer
    x = 155,375.26

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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.