Home / 135,908.40-187,554.78-79,308.84

Finding the Fourth Proportional to 135,908.40, 187,554.78 and 79,308.84

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Solution

The fourth proportional to 135,908.40, 187,554.78 and 79,308.84 is: 109,446.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,908.40 : 187,554.78 = 79,308.84 : x
  2. Step 2: Convert to fraction form
    135,908.40/187,554.78 = 79,308.84/x
  3. Step 3: Cross multiply
    135,908.40x = 187,554.78 × 79,308.84
  4. Step 4: Simplify right side
    135,908.40x = 14,874,752,038.26
  5. Step 5: Solve for x
    x = 14,874,752,038.26/135,908.40
  6. Step 6: Final answer
    x = 109,446.89

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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.