Home / 142,991.16-197,311.98-79,313.08

Finding the Fourth Proportional to 142,991.16, 197,311.98 and 79,313.08

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Solution

The fourth proportional to 142,991.16, 197,311.98 and 79,313.08 is: 109,443.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,991.16 : 197,311.98 = 79,313.08 : x
  2. Step 2: Convert to fraction form
    142,991.16/197,311.98 = 79,313.08/x
  3. Step 3: Cross multiply
    142,991.16x = 197,311.98 × 79,313.08
  4. Step 4: Simplify right side
    142,991.16x = 15,649,420,854.70
  5. Step 5: Solve for x
    x = 15,649,420,854.70/142,991.16
  6. Step 6: Final answer
    x = 109,443.28

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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.