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Finding the Fourth Proportional to 115,169.10, 158,929.11 and 64,858.38

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Solution

The fourth proportional to 115,169.10, 158,929.11 and 64,858.38 is: 89,502.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,169.10 : 158,929.11 = 64,858.38 : x
  2. Step 2: Convert to fraction form
    115,169.10/158,929.11 = 64,858.38/x
  3. Step 3: Cross multiply
    115,169.10x = 158,929.11 × 64,858.38
  4. Step 4: Simplify right side
    115,169.10x = 10,307,884,609.44
  5. Step 5: Solve for x
    x = 10,307,884,609.44/115,169.10
  6. Step 6: Final answer
    x = 89,502.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.