Home / 142,771.90-197,022.28-79,109.14

Finding the Fourth Proportional to 142,771.90, 197,022.28 and 79,109.14

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Solution

The fourth proportional to 142,771.90, 197,022.28 and 79,109.14 is: 109,168.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,771.90 : 197,022.28 = 79,109.14 : x
  2. Step 2: Convert to fraction form
    142,771.90/197,022.28 = 79,109.14/x
  3. Step 3: Cross multiply
    142,771.90x = 197,022.28 × 79,109.14
  4. Step 4: Simplify right side
    142,771.90x = 15,586,261,750.98
  5. Step 5: Solve for x
    x = 15,586,261,750.98/142,771.90
  6. Step 6: Final answer
    x = 109,168.98

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1.5x scale

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.