Home / 100,493.39-138,681.26-55,176.02

Finding the Fourth Proportional to 100,493.39, 138,681.26 and 55,176.02

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Solution

The fourth proportional to 100,493.39, 138,681.26 and 55,176.02 is: 76,143.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,493.39 : 138,681.26 = 55,176.02 : x
  2. Step 2: Convert to fraction form
    100,493.39/138,681.26 = 55,176.02/x
  3. Step 3: Cross multiply
    100,493.39x = 138,681.26 × 55,176.02
  4. Step 4: Simplify right side
    100,493.39x = 7,651,879,006.10
  5. Step 5: Solve for x
    x = 7,651,879,006.10/100,493.39
  6. Step 6: Final answer
    x = 76,143.11

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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.