Home / 123,809.24-170,897.38-72,819.74

Finding the Fourth Proportional to 123,809.24, 170,897.38 and 72,819.74

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Solution

The fourth proportional to 123,809.24, 170,897.38 and 72,819.74 is: 100,515.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,809.24 : 170,897.38 = 72,819.74 : x
  2. Step 2: Convert to fraction form
    123,809.24/170,897.38 = 72,819.74/x
  3. Step 3: Cross multiply
    123,809.24x = 170,897.38 × 72,819.74
  4. Step 4: Simplify right side
    123,809.24x = 12,444,702,778.28
  5. Step 5: Solve for x
    x = 12,444,702,778.28/123,809.24
  6. Step 6: Final answer
    x = 100,515.14

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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.