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Finding the Fourth Proportional to 139,470.93, 192,468.74 and 75,808.53

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Solution

The fourth proportional to 139,470.93, 192,468.74 and 75,808.53 is: 104,615.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,470.93 : 192,468.74 = 75,808.53 : x
  2. Step 2: Convert to fraction form
    139,470.93/192,468.74 = 75,808.53/x
  3. Step 3: Cross multiply
    139,470.93x = 192,468.74 × 75,808.53
  4. Step 4: Simplify right side
    139,470.93x = 14,590,771,871.31
  5. Step 5: Solve for x
    x = 14,590,771,871.31/139,470.93
  6. Step 6: Final answer
    x = 104,615.15

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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.