Home / 135,835.20-187,466.40-79,243.20

Finding the Fourth Proportional to 135,835.20, 187,466.40 and 79,243.20

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Solution

The fourth proportional to 135,835.20, 187,466.40 and 79,243.20 is: 109,363.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,835.20 : 187,466.40 = 79,243.20 : x
  2. Step 2: Convert to fraction form
    135,835.20/187,466.40 = 79,243.20/x
  3. Step 3: Cross multiply
    135,835.20x = 187,466.40 × 79,243.20
  4. Step 4: Simplify right side
    135,835.20x = 14,855,437,428.48
  5. Step 5: Solve for x
    x = 14,855,437,428.48/135,835.20
  6. Step 6: Final answer
    x = 109,363.68

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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.