Home / 142,846.98-197,127.49-78,319.79

Finding the Fourth Proportional to 142,846.98, 197,127.49 and 78,319.79

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Solution

The fourth proportional to 142,846.98, 197,127.49 and 78,319.79 is: 108,080.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,846.98 : 197,127.49 = 78,319.79 : x
  2. Step 2: Convert to fraction form
    142,846.98/197,127.49 = 78,319.79/x
  3. Step 3: Cross multiply
    142,846.98x = 197,127.49 × 78,319.79
  4. Step 4: Simplify right side
    142,846.98x = 15,438,983,620.03
  5. Step 5: Solve for x
    x = 15,438,983,620.03/142,846.98
  6. Step 6: Final answer
    x = 108,080.57

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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.