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Finding the Fourth Proportional to 207,636.90, 311,601.15 and 89,393.10

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Solution

The fourth proportional to 207,636.90, 311,601.15 and 89,393.10 is: 134,152.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,636.90 : 311,601.15 = 89,393.10 : x
  2. Step 2: Convert to fraction form
    207,636.90/311,601.15 = 89,393.10/x
  3. Step 3: Cross multiply
    207,636.90x = 311,601.15 × 89,393.10
  4. Step 4: Simplify right side
    207,636.90x = 27,854,992,762.07
  5. Step 5: Solve for x
    x = 27,854,992,762.07/207,636.90
  6. Step 6: Final answer
    x = 134,152.42

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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.