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Finding the Fourth Proportional to 139,394.32, 209,066.80 and 63,475.45

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Solution

The fourth proportional to 139,394.32, 209,066.80 and 63,475.45 is: 95,201.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,394.32 : 209,066.80 = 63,475.45 : x
  2. Step 2: Convert to fraction form
    139,394.32/209,066.80 = 63,475.45/x
  3. Step 3: Cross multiply
    139,394.32x = 209,066.80 × 63,475.45
  4. Step 4: Simplify right side
    139,394.32x = 13,270,609,210.06
  5. Step 5: Solve for x
    x = 13,270,609,210.06/139,394.32
  6. Step 6: Final answer
    x = 95,201.94

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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.