Home / 135,988.23-187,603.38-90,622.02

Finding the Fourth Proportional to 135,988.23, 187,603.38 and 90,622.02

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Solution

The fourth proportional to 135,988.23, 187,603.38 and 90,622.02 is: 125,018.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,988.23 : 187,603.38 = 90,622.02 : x
  2. Step 2: Convert to fraction form
    135,988.23/187,603.38 = 90,622.02/x
  3. Step 3: Cross multiply
    135,988.23x = 187,603.38 × 90,622.02
  4. Step 4: Simplify right side
    135,988.23x = 17,000,997,254.43
  5. Step 5: Solve for x
    x = 17,000,997,254.43/135,988.23
  6. Step 6: Final answer
    x = 125,018.15

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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.