Home / 105,818.40-146,028.96-58,071.65

Finding the Fourth Proportional to 105,818.40, 146,028.96 and 58,071.65

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Solution

The fourth proportional to 105,818.40, 146,028.96 and 58,071.65 is: 80,138.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,818.40 : 146,028.96 = 58,071.65 : x
  2. Step 2: Convert to fraction form
    105,818.40/146,028.96 = 58,071.65/x
  3. Step 3: Cross multiply
    105,818.40x = 146,028.96 × 58,071.65
  4. Step 4: Simplify right side
    105,818.40x = 8,480,141,924.84
  5. Step 5: Solve for x
    x = 8,480,141,924.84/105,818.40
  6. Step 6: Final answer
    x = 80,138.63

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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.