Home / 105,818.25-146,028.75-58,072.38

Finding the Fourth Proportional to 105,818.25, 146,028.75 and 58,072.38

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Solution

The fourth proportional to 105,818.25, 146,028.75 and 58,072.38 is: 80,139.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,818.25 : 146,028.75 = 58,072.38 : x
  2. Step 2: Convert to fraction form
    105,818.25/146,028.75 = 58,072.38/x
  3. Step 3: Cross multiply
    105,818.25x = 146,028.75 × 58,072.38
  4. Step 4: Simplify right side
    105,818.25x = 8,480,237,060.93
  5. Step 5: Solve for x
    x = 8,480,237,060.93/105,818.25
  6. Step 6: Final answer
    x = 80,139.65

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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.