Home / 122,316.27-168,640.23-79,219.63

Finding the Fourth Proportional to 122,316.27, 168,640.23 and 79,219.63

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Solution

The fourth proportional to 122,316.27, 168,640.23 and 79,219.63 is: 109,221.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,316.27 : 168,640.23 = 79,219.63 : x
  2. Step 2: Convert to fraction form
    122,316.27/168,640.23 = 79,219.63/x
  3. Step 3: Cross multiply
    122,316.27x = 168,640.23 × 79,219.63
  4. Step 4: Simplify right side
    122,316.27x = 13,359,616,623.71
  5. Step 5: Solve for x
    x = 13,359,616,623.71/122,316.27
  6. Step 6: Final answer
    x = 109,221.91

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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.