Home / 135,520.02-187,035.21-81,835.38

Finding the Fourth Proportional to 135,520.02, 187,035.21 and 81,835.38

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Solution

The fourth proportional to 135,520.02, 187,035.21 and 81,835.38 is: 112,943.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,520.02 : 187,035.21 = 81,835.38 : x
  2. Step 2: Convert to fraction form
    135,520.02/187,035.21 = 81,835.38/x
  3. Step 3: Cross multiply
    135,520.02x = 187,035.21 × 81,835.38
  4. Step 4: Simplify right side
    135,520.02x = 15,306,097,483.73
  5. Step 5: Solve for x
    x = 15,306,097,483.73/135,520.02
  6. Step 6: Final answer
    x = 112,943.44

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1.5x scale

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.