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Finding the Fourth Proportional to 139,254.81, 208,857.53 and 63,335.57

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Solution

The fourth proportional to 139,254.81, 208,857.53 and 63,335.57 is: 94,992.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,254.81 : 208,857.53 = 63,335.57 : x
  2. Step 2: Convert to fraction form
    139,254.81/208,857.53 = 63,335.57/x
  3. Step 3: Cross multiply
    139,254.81x = 208,857.53 × 63,335.57
  4. Step 4: Simplify right side
    139,254.81x = 13,228,109,350.38
  5. Step 5: Solve for x
    x = 13,228,109,350.38/139,254.81
  6. Step 6: Final answer
    x = 94,992.12

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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.