Home / 143,838.81-198,424.60-109,788.18

Finding the Fourth Proportional to 143,838.81, 198,424.60 and 109,788.18

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Solution

The fourth proportional to 143,838.81, 198,424.60 and 109,788.18 is: 151,452.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,838.81 : 198,424.60 = 109,788.18 : x
  2. Step 2: Convert to fraction form
    143,838.81/198,424.60 = 109,788.18/x
  3. Step 3: Cross multiply
    143,838.81x = 198,424.60 × 109,788.18
  4. Step 4: Simplify right side
    143,838.81x = 21,784,675,701.23
  5. Step 5: Solve for x
    x = 21,784,675,701.23/143,838.81
  6. Step 6: Final answer
    x = 151,452.00

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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.