Home / 103,618.02-155,427.02-68,549.48

Finding the Fourth Proportional to 103,618.02, 155,427.02 and 68,549.48

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Solution

The fourth proportional to 103,618.02, 155,427.02 and 68,549.48 is: 102,824.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,618.02 : 155,427.02 = 68,549.48 : x
  2. Step 2: Convert to fraction form
    103,618.02/155,427.02 = 68,549.48/x
  3. Step 3: Cross multiply
    103,618.02x = 155,427.02 × 68,549.48
  4. Step 4: Simplify right side
    103,618.02x = 10,654,441,398.95
  5. Step 5: Solve for x
    x = 10,654,441,398.95/103,618.02
  6. Step 6: Final answer
    x = 102,824.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.