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Finding the Fourth Proportional to 125,991.69, 173,868.54 and 69,403.08

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Solution

The fourth proportional to 125,991.69, 173,868.54 and 69,403.08 is: 95,776.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,991.69 : 173,868.54 = 69,403.08 : x
  2. Step 2: Convert to fraction form
    125,991.69/173,868.54 = 69,403.08/x
  3. Step 3: Cross multiply
    125,991.69x = 173,868.54 × 69,403.08
  4. Step 4: Simplify right side
    125,991.69x = 12,067,012,191.10
  5. Step 5: Solve for x
    x = 12,067,012,191.10/125,991.69
  6. Step 6: Final answer
    x = 95,776.25

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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.