Home / 107,977.14-148,928.13-79,287.80

Finding the Fourth Proportional to 107,977.14, 148,928.13 and 79,287.80

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Solution

The fourth proportional to 107,977.14, 148,928.13 and 79,287.80 is: 109,358.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,977.14 : 148,928.13 = 79,287.80 : x
  2. Step 2: Convert to fraction form
    107,977.14/148,928.13 = 79,287.80/x
  3. Step 3: Cross multiply
    107,977.14x = 148,928.13 × 79,287.80
  4. Step 4: Simplify right side
    107,977.14x = 11,808,183,017.05
  5. Step 5: Solve for x
    x = 11,808,183,017.05/107,977.14
  6. Step 6: Final answer
    x = 109,358.17

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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.