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Finding the Fourth Proportional to 115,416.40, 173,297.40 and 80,510.80

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Solution

The fourth proportional to 115,416.40, 173,297.40 and 80,510.80 is: 120,886.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,416.40 : 173,297.40 = 80,510.80 : x
  2. Step 2: Convert to fraction form
    115,416.40/173,297.40 = 80,510.80/x
  3. Step 3: Cross multiply
    115,416.40x = 173,297.40 × 80,510.80
  4. Step 4: Simplify right side
    115,416.40x = 13,952,312,311.92
  5. Step 5: Solve for x
    x = 13,952,312,311.92/115,416.40
  6. Step 6: Final answer
    x = 120,886.74

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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.