Home / 143,865.12-198,688.77-109,507.08

Finding the Fourth Proportional to 143,865.12, 198,688.77 and 109,507.08

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Solution

The fourth proportional to 143,865.12, 198,688.77 and 109,507.08 is: 151,237.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,865.12 : 198,688.77 = 109,507.08 : x
  2. Step 2: Convert to fraction form
    143,865.12/198,688.77 = 109,507.08/x
  3. Step 3: Cross multiply
    143,865.12x = 198,688.77 × 109,507.08
  4. Step 4: Simplify right side
    143,865.12x = 21,757,827,031.49
  5. Step 5: Solve for x
    x = 21,757,827,031.49/143,865.12
  6. Step 6: Final answer
    x = 151,237.68

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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.