Home / 135,492.15-187,010.25-90,172.02

Finding the Fourth Proportional to 135,492.15, 187,010.25 and 90,172.02

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Solution

The fourth proportional to 135,492.15, 187,010.25 and 90,172.02 is: 124,458.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,492.15 : 187,010.25 = 90,172.02 : x
  2. Step 2: Convert to fraction form
    135,492.15/187,010.25 = 90,172.02/x
  3. Step 3: Cross multiply
    135,492.15x = 187,010.25 × 90,172.02
  4. Step 4: Simplify right side
    135,492.15x = 16,863,092,003.21
  5. Step 5: Solve for x
    x = 16,863,092,003.21/135,492.15
  6. Step 6: Final answer
    x = 124,458.07

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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.