Home / 123,733.80-170,743.24-72,748.60

Finding the Fourth Proportional to 123,733.80, 170,743.24 and 72,748.60

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Solution

The fourth proportional to 123,733.80, 170,743.24 and 72,748.60 is: 100,387.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,733.80 : 170,743.24 = 72,748.60 : x
  2. Step 2: Convert to fraction form
    123,733.80/170,743.24 = 72,748.60/x
  3. Step 3: Cross multiply
    123,733.80x = 170,743.24 × 72,748.60
  4. Step 4: Simplify right side
    123,733.80x = 12,421,331,669.46
  5. Step 5: Solve for x
    x = 12,421,331,669.46/123,733.80
  6. Step 6: Final answer
    x = 100,387.54

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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.