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Finding the Fourth Proportional to 115,372.40, 173,058.60 and 85,847.90

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Solution

The fourth proportional to 115,372.40, 173,058.60 and 85,847.90 is: 128,771.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,372.40 : 173,058.60 = 85,847.90 : x
  2. Step 2: Convert to fraction form
    115,372.40/173,058.60 = 85,847.90/x
  3. Step 3: Cross multiply
    115,372.40x = 173,058.60 × 85,847.90
  4. Step 4: Simplify right side
    115,372.40x = 14,856,717,386.94
  5. Step 5: Solve for x
    x = 14,856,717,386.94/115,372.40
  6. Step 6: Final answer
    x = 128,771.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.