Home / 122,069.28-168,447.12-81,776.52

Finding the Fourth Proportional to 122,069.28, 168,447.12 and 81,776.52

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Solution

The fourth proportional to 122,069.28, 168,447.12 and 81,776.52 is: 112,845.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,069.28 : 168,447.12 = 81,776.52 : x
  2. Step 2: Convert to fraction form
    122,069.28/168,447.12 = 81,776.52/x
  3. Step 3: Cross multiply
    122,069.28x = 168,447.12 × 81,776.52
  4. Step 4: Simplify right side
    122,069.28x = 13,775,019,277.62
  5. Step 5: Solve for x
    x = 13,775,019,277.62/122,069.28
  6. Step 6: Final answer
    x = 112,845.91

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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.