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Finding the Fourth Proportional to 115,410.40, 173,288.40 and 80,504.80

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Solution

The fourth proportional to 115,410.40, 173,288.40 and 80,504.80 is: 120,877.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,410.40 : 173,288.40 = 80,504.80 : x
  2. Step 2: Convert to fraction form
    115,410.40/173,288.40 = 80,504.80/x
  3. Step 3: Cross multiply
    115,410.40x = 173,288.40 × 80,504.80
  4. Step 4: Simplify right side
    115,410.40x = 13,950,547,984.32
  5. Step 5: Solve for x
    x = 13,950,547,984.32/115,410.40
  6. Step 6: Final answer
    x = 120,877.74

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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.