Home / 143,115.24-197,430.42-100,697.16

Finding the Fourth Proportional to 143,115.24, 197,430.42 and 100,697.16

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Solution

The fourth proportional to 143,115.24, 197,430.42 and 100,697.16 is: 138,913.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,115.24 : 197,430.42 = 100,697.16 : x
  2. Step 2: Convert to fraction form
    143,115.24/197,430.42 = 100,697.16/x
  3. Step 3: Cross multiply
    143,115.24x = 197,430.42 × 100,697.16
  4. Step 4: Simplify right side
    143,115.24x = 19,880,682,591.61
  5. Step 5: Solve for x
    x = 19,880,682,591.61/143,115.24
  6. Step 6: Final answer
    x = 138,913.81

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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.