Home / 143,818.61-198,340.79-90,109.53

Finding the Fourth Proportional to 143,818.61, 198,340.79 and 90,109.53

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Solution

The fourth proportional to 143,818.61, 198,340.79 and 90,109.53 is: 124,270.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,818.61 : 198,340.79 = 90,109.53 : x
  2. Step 2: Convert to fraction form
    143,818.61/198,340.79 = 90,109.53/x
  3. Step 3: Cross multiply
    143,818.61x = 198,340.79 × 90,109.53
  4. Step 4: Simplify right side
    143,818.61x = 17,872,394,916.18
  5. Step 5: Solve for x
    x = 17,872,394,916.18/143,818.61
  6. Step 6: Final answer
    x = 124,270.40

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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.