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Finding the Fourth Proportional to 142,283.79, 196,378.79 and 93,800.61

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Solution

The fourth proportional to 142,283.79, 196,378.79 and 93,800.61 is: 129,462.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,283.79 : 196,378.79 = 93,800.61 : x
  2. Step 2: Convert to fraction form
    142,283.79/196,378.79 = 93,800.61/x
  3. Step 3: Cross multiply
    142,283.79x = 196,378.79 × 93,800.61
  4. Step 4: Simplify right side
    142,283.79x = 18,420,449,824.06
  5. Step 5: Solve for x
    x = 18,420,449,824.06/142,283.79
  6. Step 6: Final answer
    x = 129,462.74

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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.