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Finding the Fourth Proportional to 115,363.65, 161,115.45 and 115,363.65

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Solution

The fourth proportional to 115,363.65, 161,115.45 and 115,363.65 is: 161,115.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,363.65 : 161,115.45 = 115,363.65 : x
  2. Step 2: Convert to fraction form
    115,363.65/161,115.45 = 115,363.65/x
  3. Step 3: Cross multiply
    115,363.65x = 161,115.45 × 115,363.65
  4. Step 4: Simplify right side
    115,363.65x = 18,586,866,383.39
  5. Step 5: Solve for x
    x = 18,586,866,383.39/115,363.65
  6. Step 6: Final answer
    x = 161,115.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.