Home / 100,396.96-138,547.38-62,148.88

Finding the Fourth Proportional to 100,396.96, 138,547.38 and 62,148.88

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Solution

The fourth proportional to 100,396.96, 138,547.38 and 62,148.88 is: 85,765.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,396.96 : 138,547.38 = 62,148.88 : x
  2. Step 2: Convert to fraction form
    100,396.96/138,547.38 = 62,148.88/x
  3. Step 3: Cross multiply
    100,396.96x = 138,547.38 × 62,148.88
  4. Step 4: Simplify right side
    100,396.96x = 8,610,564,147.57
  5. Step 5: Solve for x
    x = 8,610,564,147.57/100,396.96
  6. Step 6: Final answer
    x = 85,765.19

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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.