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Finding the Fourth Proportional to 139,555.84, 192,586.56 and 75,892.48

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Solution

The fourth proportional to 139,555.84, 192,586.56 and 75,892.48 is: 104,731.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,555.84 : 192,586.56 = 75,892.48 : x
  2. Step 2: Convert to fraction form
    139,555.84/192,586.56 = 75,892.48/x
  3. Step 3: Cross multiply
    139,555.84x = 192,586.56 × 75,892.48
  4. Step 4: Simplify right side
    139,555.84x = 14,615,871,653.07
  5. Step 5: Solve for x
    x = 14,615,871,653.07/139,555.84
  6. Step 6: Final answer
    x = 104,731.35

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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.