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Finding the Fourth Proportional to 115,461.80, 173,192.70 and 108,463.40

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Solution

The fourth proportional to 115,461.80, 173,192.70 and 108,463.40 is: 162,695.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,461.80 : 173,192.70 = 108,463.40 : x
  2. Step 2: Convert to fraction form
    115,461.80/173,192.70 = 108,463.40/x
  3. Step 3: Cross multiply
    115,461.80x = 173,192.70 × 108,463.40
  4. Step 4: Simplify right side
    115,461.80x = 18,785,069,097.18
  5. Step 5: Solve for x
    x = 18,785,069,097.18/115,461.80
  6. Step 6: Final answer
    x = 162,695.10

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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.