Home / 143,365.28-197,832.88-79,699.20

Finding the Fourth Proportional to 143,365.28, 197,832.88 and 79,699.20

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Solution

The fourth proportional to 143,365.28, 197,832.88 and 79,699.20 is: 109,978.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,365.28 : 197,832.88 = 79,699.20 : x
  2. Step 2: Convert to fraction form
    143,365.28/197,832.88 = 79,699.20/x
  3. Step 3: Cross multiply
    143,365.28x = 197,832.88 × 79,699.20
  4. Step 4: Simplify right side
    143,365.28x = 15,767,122,269.70
  5. Step 5: Solve for x
    x = 15,767,122,269.70/143,365.28
  6. Step 6: Final answer
    x = 109,978.67

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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.