Home / 100,795.90-139,098.46-55,477.16

Finding the Fourth Proportional to 100,795.90, 139,098.46 and 55,477.16

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Solution

The fourth proportional to 100,795.90, 139,098.46 and 55,477.16 is: 76,558.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,795.90 : 139,098.46 = 55,477.16 : x
  2. Step 2: Convert to fraction form
    100,795.90/139,098.46 = 55,477.16/x
  3. Step 3: Cross multiply
    100,795.90x = 139,098.46 × 55,477.16
  4. Step 4: Simplify right side
    100,795.90x = 7,716,787,521.17
  5. Step 5: Solve for x
    x = 7,716,787,521.17/100,795.90
  6. Step 6: Final answer
    x = 76,558.55

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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.