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Finding the Fourth Proportional to 125,356.80, 172,993.76 and 68,767.04

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Solution

The fourth proportional to 125,356.80, 172,993.76 and 68,767.04 is: 94,899.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,356.80 : 172,993.76 = 68,767.04 : x
  2. Step 2: Convert to fraction form
    125,356.80/172,993.76 = 68,767.04/x
  3. Step 3: Cross multiply
    125,356.80x = 172,993.76 × 68,767.04
  4. Step 4: Simplify right side
    125,356.80x = 11,896,268,813.67
  5. Step 5: Solve for x
    x = 11,896,268,813.67/125,356.80
  6. Step 6: Final answer
    x = 94,899.27

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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.