Home / 100,371.02-138,499.25-57,353.30

Finding the Fourth Proportional to 100,371.02, 138,499.25 and 57,353.30

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Solution

The fourth proportional to 100,371.02, 138,499.25 and 57,353.30 is: 79,140.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,371.02 : 138,499.25 = 57,353.30 : x
  2. Step 2: Convert to fraction form
    100,371.02/138,499.25 = 57,353.30/x
  3. Step 3: Cross multiply
    100,371.02x = 138,499.25 × 57,353.30
  4. Step 4: Simplify right side
    100,371.02x = 7,943,388,748.26
  5. Step 5: Solve for x
    x = 7,943,388,748.26/100,371.02
  6. Step 6: Final answer
    x = 79,140.26

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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.