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Finding the Fourth Proportional to 115,494.60, 159,393.78 and 70,162.68

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Solution

The fourth proportional to 115,494.60, 159,393.78 and 70,162.68 is: 96,831.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,494.60 : 159,393.78 = 70,162.68 : x
  2. Step 2: Convert to fraction form
    115,494.60/159,393.78 = 70,162.68/x
  3. Step 3: Cross multiply
    115,494.60x = 159,393.78 × 70,162.68
  4. Step 4: Simplify right side
    115,494.60x = 11,183,494,780.13
  5. Step 5: Solve for x
    x = 11,183,494,780.13/115,494.60
  6. Step 6: Final answer
    x = 96,831.32

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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.