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Finding the Fourth Proportional to 115,443.57, 173,165.37 and 84,053.40

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Solution

The fourth proportional to 115,443.57, 173,165.37 and 84,053.40 is: 126,080.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,443.57 : 173,165.37 = 84,053.40 : x
  2. Step 2: Convert to fraction form
    115,443.57/173,165.37 = 84,053.40/x
  3. Step 3: Cross multiply
    115,443.57x = 173,165.37 × 84,053.40
  4. Step 4: Simplify right side
    115,443.57x = 14,555,137,146.19
  5. Step 5: Solve for x
    x = 14,555,137,146.19/115,443.57
  6. Step 6: Final answer
    x = 126,080.10

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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.