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Finding the Fourth Proportional to 120,393.50, 179,858.09 and 77,927.62

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Solution

The fourth proportional to 120,393.50, 179,858.09 and 77,927.62 is: 116,417.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,393.50 : 179,858.09 = 77,927.62 : x
  2. Step 2: Convert to fraction form
    120,393.50/179,858.09 = 77,927.62/x
  3. Step 3: Cross multiply
    120,393.50x = 179,858.09 × 77,927.62
  4. Step 4: Simplify right side
    120,393.50x = 14,015,912,891.45
  5. Step 5: Solve for x
    x = 14,015,912,891.45/120,393.50
  6. Step 6: Final answer
    x = 116,417.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.