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Finding the Fourth Proportional to 142,955.84, 197,287.44 and 79,300.64

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Solution

The fourth proportional to 142,955.84, 197,287.44 and 79,300.64 is: 109,439.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,955.84 : 197,287.44 = 79,300.64 : x
  2. Step 2: Convert to fraction form
    142,955.84/197,287.44 = 79,300.64/x
  3. Step 3: Cross multiply
    142,955.84x = 197,287.44 × 79,300.64
  4. Step 4: Simplify right side
    142,955.84x = 15,645,020,255.96
  5. Step 5: Solve for x
    x = 15,645,020,255.96/142,955.84
  6. Step 6: Final answer
    x = 109,439.53

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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.