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Finding the Fourth Proportional to 115,079.36, 158,788.32 and 64,767.68

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Solution

The fourth proportional to 115,079.36, 158,788.32 and 64,767.68 is: 89,367.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,079.36 : 158,788.32 = 64,767.68 : x
  2. Step 2: Convert to fraction form
    115,079.36/158,788.32 = 64,767.68/x
  3. Step 3: Cross multiply
    115,079.36x = 158,788.32 × 64,767.68
  4. Step 4: Simplify right side
    115,079.36x = 10,284,351,097.50
  5. Step 5: Solve for x
    x = 10,284,351,097.50/115,079.36
  6. Step 6: Final answer
    x = 89,367.47

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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.