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Finding the Fourth Proportional to 115,607.40, 173,670.30 and 80,615.40

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Solution

The fourth proportional to 115,607.40, 173,670.30 and 80,615.40 is: 121,103.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,607.40 : 173,670.30 = 80,615.40 : x
  2. Step 2: Convert to fraction form
    115,607.40/173,670.30 = 80,615.40/x
  3. Step 3: Cross multiply
    115,607.40x = 173,670.30 × 80,615.40
  4. Step 4: Simplify right side
    115,607.40x = 14,000,500,702.62
  5. Step 5: Solve for x
    x = 14,000,500,702.62/115,607.40
  6. Step 6: Final answer
    x = 121,103.85

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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.