Home / 123,822.24-170,878.08-72,838.56

Finding the Fourth Proportional to 123,822.24, 170,878.08 and 72,838.56

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Solution

The fourth proportional to 123,822.24, 170,878.08 and 72,838.56 is: 100,519.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,822.24 : 170,878.08 = 72,838.56 : x
  2. Step 2: Convert to fraction form
    123,822.24/170,878.08 = 72,838.56/x
  3. Step 3: Cross multiply
    123,822.24x = 170,878.08 × 72,838.56
  4. Step 4: Simplify right side
    123,822.24x = 12,446,513,282.76
  5. Step 5: Solve for x
    x = 12,446,513,282.76/123,822.24
  6. Step 6: Final answer
    x = 100,519.21

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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.