Home / 100,973.32-139,246.04-66,456.38

Finding the Fourth Proportional to 100,973.32, 139,246.04 and 66,456.38

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Solution

The fourth proportional to 100,973.32, 139,246.04 and 66,456.38 is: 91,645.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,973.32 : 139,246.04 = 66,456.38 : x
  2. Step 2: Convert to fraction form
    100,973.32/139,246.04 = 66,456.38/x
  3. Step 3: Cross multiply
    100,973.32x = 139,246.04 × 66,456.38
  4. Step 4: Simplify right side
    100,973.32x = 9,253,788,261.99
  5. Step 5: Solve for x
    x = 9,253,788,261.99/100,973.32
  6. Step 6: Final answer
    x = 91,645.88

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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.