Home / 138,860.80-191,626.95-75,197.14

Finding the Fourth Proportional to 138,860.80, 191,626.95 and 75,197.14

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Solution

The fourth proportional to 138,860.80, 191,626.95 and 75,197.14 is: 103,771.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,860.80 : 191,626.95 = 75,197.14 : x
  2. Step 2: Convert to fraction form
    138,860.80/191,626.95 = 75,197.14/x
  3. Step 3: Cross multiply
    138,860.80x = 191,626.95 × 75,197.14
  4. Step 4: Simplify right side
    138,860.80x = 14,409,798,586.92
  5. Step 5: Solve for x
    x = 14,409,798,586.92/138,860.80
  6. Step 6: Final answer
    x = 103,771.54

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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.