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Finding the Fourth Proportional to 115,997.38, 160,087.62 and 65,018.77

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Solution

The fourth proportional to 115,997.38, 160,087.62 and 65,018.77 is: 89,732.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,997.38 : 160,087.62 = 65,018.77 : x
  2. Step 2: Convert to fraction form
    115,997.38/160,087.62 = 65,018.77/x
  3. Step 3: Cross multiply
    115,997.38x = 160,087.62 × 65,018.77
  4. Step 4: Simplify right side
    115,997.38x = 10,408,700,144.63
  5. Step 5: Solve for x
    x = 10,408,700,144.63/115,997.38
  6. Step 6: Final answer
    x = 89,732.20

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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.