Home / 122,316.03-168,639.87-79,219.38

Finding the Fourth Proportional to 122,316.03, 168,639.87 and 79,219.38

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Solution

The fourth proportional to 122,316.03, 168,639.87 and 79,219.38 is: 109,221.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,316.03 : 168,639.87 = 79,219.38 : x
  2. Step 2: Convert to fraction form
    122,316.03/168,639.87 = 79,219.38/x
  3. Step 3: Cross multiply
    122,316.03x = 168,639.87 × 79,219.38
  4. Step 4: Simplify right side
    122,316.03x = 13,359,545,944.68
  5. Step 5: Solve for x
    x = 13,359,545,944.68/122,316.03
  6. Step 6: Final answer
    x = 109,221.55

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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.