Home / 135,803.20-187,430.88-79,214.52

Finding the Fourth Proportional to 135,803.20, 187,430.88 and 79,214.52

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Solution

The fourth proportional to 135,803.20, 187,430.88 and 79,214.52 is: 109,329.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,803.20 : 187,430.88 = 79,214.52 : x
  2. Step 2: Convert to fraction form
    135,803.20/187,430.88 = 79,214.52/x
  3. Step 3: Cross multiply
    135,803.20x = 187,430.88 × 79,214.52
  4. Step 4: Simplify right side
    135,803.20x = 14,847,247,192.38
  5. Step 5: Solve for x
    x = 14,847,247,192.38/135,803.20
  6. Step 6: Final answer
    x = 109,329.14

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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.