Home / 143,349.48-197,829-79,688.28

Finding the Fourth Proportional to 143,349.48, 197,829 and 79,688.28

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Solution

The fourth proportional to 143,349.48, 197,829 and 79,688.28 is: 109,973.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,349.48 : 197,829 = 79,688.28 : x
  2. Step 2: Convert to fraction form
    143,349.48/197,829 = 79,688.28/x
  3. Step 3: Cross multiply
    143,349.48x = 197,829 × 79,688.28
  4. Step 4: Simplify right side
    143,349.48x = 15,764,652,744.12
  5. Step 5: Solve for x
    x = 15,764,652,744.12/143,349.48
  6. Step 6: Final answer
    x = 109,973.56

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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.