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Finding the Fourth Proportional to 192,340.71, 265,431 and 105,127.56

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Solution

The fourth proportional to 192,340.71, 265,431 and 105,127.56 is: 145,076.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,340.71 : 265,431 = 105,127.56 : x
  2. Step 2: Convert to fraction form
    192,340.71/265,431 = 105,127.56/x
  3. Step 3: Cross multiply
    192,340.71x = 265,431 × 105,127.56
  4. Step 4: Simplify right side
    192,340.71x = 27,904,113,378.36
  5. Step 5: Solve for x
    x = 27,904,113,378.36/192,340.71
  6. Step 6: Final answer
    x = 145,076.48

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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.