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Finding the Fourth Proportional to 125,780.88, 173,578.44 and 69,190.80

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Solution

The fourth proportional to 125,780.88, 173,578.44 and 69,190.80 is: 95,483.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,780.88 : 173,578.44 = 69,190.80 : x
  2. Step 2: Convert to fraction form
    125,780.88/173,578.44 = 69,190.80/x
  3. Step 3: Cross multiply
    125,780.88x = 173,578.44 × 69,190.80
  4. Step 4: Simplify right side
    125,780.88x = 12,010,031,126.35
  5. Step 5: Solve for x
    x = 12,010,031,126.35/125,780.88
  6. Step 6: Final answer
    x = 95,483.76

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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.