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Finding the Fourth Proportional to 207,182.32, 310,775.28 and 66,940.96

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Solution

The fourth proportional to 207,182.32, 310,775.28 and 66,940.96 is: 100,412.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,182.32 : 310,775.28 = 66,940.96 : x
  2. Step 2: Convert to fraction form
    207,182.32/310,775.28 = 66,940.96/x
  3. Step 3: Cross multiply
    207,182.32x = 310,775.28 × 66,940.96
  4. Step 4: Simplify right side
    207,182.32x = 20,803,595,587.47
  5. Step 5: Solve for x
    x = 20,803,595,587.47/207,182.32
  6. Step 6: Final answer
    x = 100,412.02

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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.