Home / 123,215.43-170,004.98-72,200.77

Finding the Fourth Proportional to 123,215.43, 170,004.98 and 72,200.77

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Solution

The fourth proportional to 123,215.43, 170,004.98 and 72,200.77 is: 99,618.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,215.43 : 170,004.98 = 72,200.77 : x
  2. Step 2: Convert to fraction form
    123,215.43/170,004.98 = 72,200.77/x
  3. Step 3: Cross multiply
    123,215.43x = 170,004.98 × 72,200.77
  4. Step 4: Simplify right side
    123,215.43x = 12,274,490,279.33
  5. Step 5: Solve for x
    x = 12,274,490,279.33/123,215.43
  6. Step 6: Final answer
    x = 99,618.13

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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.