Home / 143,818.10-198,483-107,456.45

Finding the Fourth Proportional to 143,818.10, 198,483 and 107,456.45

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Solution

The fourth proportional to 143,818.10, 198,483 and 107,456.45 is: 148,300.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,818.10 : 198,483 = 107,456.45 : x
  2. Step 2: Convert to fraction form
    143,818.10/198,483 = 107,456.45/x
  3. Step 3: Cross multiply
    143,818.10x = 198,483 × 107,456.45
  4. Step 4: Simplify right side
    143,818.10x = 21,328,277,572.94
  5. Step 5: Solve for x
    x = 21,328,277,572.94/143,818.10
  6. Step 6: Final answer
    x = 148,300.38

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1.5x scale

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.