Home / 135,508.02-187,008.03-81,792.30

Finding the Fourth Proportional to 135,508.02, 187,008.03 and 81,792.30

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Solution

The fourth proportional to 135,508.02, 187,008.03 and 81,792.30 is: 112,877.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,508.02 : 187,008.03 = 81,792.30 : x
  2. Step 2: Convert to fraction form
    135,508.02/187,008.03 = 81,792.30/x
  3. Step 3: Cross multiply
    135,508.02x = 187,008.03 × 81,792.30
  4. Step 4: Simplify right side
    135,508.02x = 15,295,816,892.17
  5. Step 5: Solve for x
    x = 15,295,816,892.17/135,508.02
  6. Step 6: Final answer
    x = 112,877.58

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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.