Home / 142,977.89-197,333.15-79,336.19

Finding the Fourth Proportional to 142,977.89, 197,333.15 and 79,336.19

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Solution

The fourth proportional to 142,977.89, 197,333.15 and 79,336.19 is: 109,497.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,977.89 : 197,333.15 = 79,336.19 : x
  2. Step 2: Convert to fraction form
    142,977.89/197,333.15 = 79,336.19/x
  3. Step 3: Cross multiply
    142,977.89x = 197,333.15 × 79,336.19
  4. Step 4: Simplify right side
    142,977.89x = 15,655,660,378.35
  5. Step 5: Solve for x
    x = 15,655,660,378.35/142,977.89
  6. Step 6: Final answer
    x = 109,497.07

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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.