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Finding the Fourth Proportional to 139,235.47, 208,572.29 and 64,251.44

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Solution

The fourth proportional to 139,235.47, 208,572.29 and 64,251.44 is: 96,247.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,235.47 : 208,572.29 = 64,251.44 : x
  2. Step 2: Convert to fraction form
    139,235.47/208,572.29 = 64,251.44/x
  3. Step 3: Cross multiply
    139,235.47x = 208,572.29 × 64,251.44
  4. Step 4: Simplify right side
    139,235.47x = 13,401,068,612.48
  5. Step 5: Solve for x
    x = 13,401,068,612.48/139,235.47
  6. Step 6: Final answer
    x = 96,247.52

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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.