Home / 100,867.32-139,291.38-63,207.18

Finding the Fourth Proportional to 100,867.32, 139,291.38 and 63,207.18

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Solution

The fourth proportional to 100,867.32, 139,291.38 and 63,207.18 is: 87,285.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,867.32 : 139,291.38 = 63,207.18 : x
  2. Step 2: Convert to fraction form
    100,867.32/139,291.38 = 63,207.18/x
  3. Step 3: Cross multiply
    100,867.32x = 139,291.38 × 63,207.18
  4. Step 4: Simplify right side
    100,867.32x = 8,804,215,328.11
  5. Step 5: Solve for x
    x = 8,804,215,328.11/100,867.32
  6. Step 6: Final answer
    x = 87,285.11

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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.