Home / 122,112.28-168,516.64-79,646.44

Finding the Fourth Proportional to 122,112.28, 168,516.64 and 79,646.44

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Solution

The fourth proportional to 122,112.28, 168,516.64 and 79,646.44 is: 109,913.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,112.28 : 168,516.64 = 79,646.44 : x
  2. Step 2: Convert to fraction form
    122,112.28/168,516.64 = 79,646.44/x
  3. Step 3: Cross multiply
    122,112.28x = 168,516.64 × 79,646.44
  4. Step 4: Simplify right side
    122,112.28x = 13,421,750,456.76
  5. Step 5: Solve for x
    x = 13,421,750,456.76/122,112.28
  6. Step 6: Final answer
    x = 109,913.19

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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.