Home / 140,690.25-194,157.45-77,028.57

Finding the Fourth Proportional to 140,690.25, 194,157.45 and 77,028.57

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Solution

The fourth proportional to 140,690.25, 194,157.45 and 77,028.57 is: 106,302.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,690.25 : 194,157.45 = 77,028.57 : x
  2. Step 2: Convert to fraction form
    140,690.25/194,157.45 = 77,028.57/x
  3. Step 3: Cross multiply
    140,690.25x = 194,157.45 × 77,028.57
  4. Step 4: Simplify right side
    140,690.25x = 14,955,670,728.35
  5. Step 5: Solve for x
    x = 14,955,670,728.35/140,690.25
  6. Step 6: Final answer
    x = 106,302.11

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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.