Home / 100,912.16-139,248.32-62,143.82

Finding the Fourth Proportional to 100,912.16, 139,248.32 and 62,143.82

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Solution

The fourth proportional to 100,912.16, 139,248.32 and 62,143.82 is: 85,752.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,912.16 : 139,248.32 = 62,143.82 : x
  2. Step 2: Convert to fraction form
    100,912.16/139,248.32 = 62,143.82/x
  3. Step 3: Cross multiply
    100,912.16x = 139,248.32 × 62,143.82
  4. Step 4: Simplify right side
    100,912.16x = 8,653,422,048.60
  5. Step 5: Solve for x
    x = 8,653,422,048.60/100,912.16
  6. Step 6: Final answer
    x = 85,752.02

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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.