Home / 103,531.02-155,296.53-82,656.78

Finding the Fourth Proportional to 103,531.02, 155,296.53 and 82,656.78

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Solution

The fourth proportional to 103,531.02, 155,296.53 and 82,656.78 is: 123,985.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,531.02 : 155,296.53 = 82,656.78 : x
  2. Step 2: Convert to fraction form
    103,531.02/155,296.53 = 82,656.78/x
  3. Step 3: Cross multiply
    103,531.02x = 155,296.53 × 82,656.78
  4. Step 4: Simplify right side
    103,531.02x = 12,836,311,114.97
  5. Step 5: Solve for x
    x = 12,836,311,114.97/103,531.02
  6. Step 6: Final answer
    x = 123,985.17

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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.