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Finding the Fourth Proportional to 139,374.08, 192,336 and 75,713.12

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Solution

The fourth proportional to 139,374.08, 192,336 and 75,713.12 is: 104,483.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,374.08 : 192,336 = 75,713.12 : x
  2. Step 2: Convert to fraction form
    139,374.08/192,336 = 75,713.12/x
  3. Step 3: Cross multiply
    139,374.08x = 192,336 × 75,713.12
  4. Step 4: Simplify right side
    139,374.08x = 14,562,358,648.32
  5. Step 5: Solve for x
    x = 14,562,358,648.32/139,374.08
  6. Step 6: Final answer
    x = 104,483.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.