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Finding the Fourth Proportional to 139,470.93, 192,470.13 and 75,808.56

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Solution

The fourth proportional to 139,470.93, 192,470.13 and 75,808.56 is: 104,615.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,470.93 : 192,470.13 = 75,808.56 : x
  2. Step 2: Convert to fraction form
    139,470.93/192,470.13 = 75,808.56/x
  3. Step 3: Cross multiply
    139,470.93x = 192,470.13 × 75,808.56
  4. Step 4: Simplify right side
    139,470.93x = 14,590,883,398.31
  5. Step 5: Solve for x
    x = 14,590,883,398.31/139,470.93
  6. Step 6: Final answer
    x = 104,615.95

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1.5x scale

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.