Home / 100,395.75-138,547.21-55,073.82

Finding the Fourth Proportional to 100,395.75, 138,547.21 and 55,073.82

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Solution

The fourth proportional to 100,395.75, 138,547.21 and 55,073.82 is: 76,002.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,395.75 : 138,547.21 = 55,073.82 : x
  2. Step 2: Convert to fraction form
    100,395.75/138,547.21 = 55,073.82/x
  3. Step 3: Cross multiply
    100,395.75x = 138,547.21 × 55,073.82
  4. Step 4: Simplify right side
    100,395.75x = 7,630,324,590.17
  5. Step 5: Solve for x
    x = 7,630,324,590.17/100,395.75
  6. Step 6: Final answer
    x = 76,002.46

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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.