Home / 105,138.43-145,093.40-59,814.61

Finding the Fourth Proportional to 105,138.43, 145,093.40 and 59,814.61

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Solution

The fourth proportional to 105,138.43, 145,093.40 and 59,814.61 is: 82,545.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,138.43 : 145,093.40 = 59,814.61 : x
  2. Step 2: Convert to fraction form
    105,138.43/145,093.40 = 59,814.61/x
  3. Step 3: Cross multiply
    105,138.43x = 145,093.40 × 59,814.61
  4. Step 4: Simplify right side
    105,138.43x = 8,678,705,134.57
  5. Step 5: Solve for x
    x = 8,678,705,134.57/105,138.43
  6. Step 6: Final answer
    x = 82,545.51

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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.