Home / 210,151.20-315,115.39-91,684.14

Finding the Fourth Proportional to 210,151.20, 315,115.39 and 91,684.14

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Solution

The fourth proportional to 210,151.20, 315,115.39 and 91,684.14 is: 137,477.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,151.20 : 315,115.39 = 91,684.14 : x
  2. Step 2: Convert to fraction form
    210,151.20/315,115.39 = 91,684.14/x
  3. Step 3: Cross multiply
    210,151.20x = 315,115.39 × 91,684.14
  4. Step 4: Simplify right side
    210,151.20x = 28,891,083,532.91
  5. Step 5: Solve for x
    x = 28,891,083,532.91/210,151.20
  6. Step 6: Final answer
    x = 137,477.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.