Home / 131,216.69-181,166.19-100,948.61

Finding the Fourth Proportional to 131,216.69, 181,166.19 and 100,948.61

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Solution

The fourth proportional to 131,216.69, 181,166.19 and 100,948.61 is: 139,376.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,216.69 : 181,166.19 = 100,948.61 : x
  2. Step 2: Convert to fraction form
    131,216.69/181,166.19 = 100,948.61/x
  3. Step 3: Cross multiply
    131,216.69x = 181,166.19 × 100,948.61
  4. Step 4: Simplify right side
    131,216.69x = 18,288,475,059.50
  5. Step 5: Solve for x
    x = 18,288,475,059.50/131,216.69
  6. Step 6: Final answer
    x = 139,376.13

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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.