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Finding the Fourth Proportional to 139,189.16, 208,681.50 and 44,364.80

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Solution

The fourth proportional to 139,189.16, 208,681.50 and 44,364.80 is: 66,514.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,189.16 : 208,681.50 = 44,364.80 : x
  2. Step 2: Convert to fraction form
    139,189.16/208,681.50 = 44,364.80/x
  3. Step 3: Cross multiply
    139,189.16x = 208,681.50 × 44,364.80
  4. Step 4: Simplify right side
    139,189.16x = 9,258,113,011.20
  5. Step 5: Solve for x
    x = 9,258,113,011.20/139,189.16
  6. Step 6: Final answer
    x = 66,514.61

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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.