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Finding the Fourth Proportional to 117,115.74, 161,619.78 and 63,400.76

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Solution

The fourth proportional to 117,115.74, 161,619.78 and 63,400.76 is: 87,493.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,115.74 : 161,619.78 = 63,400.76 : x
  2. Step 2: Convert to fraction form
    117,115.74/161,619.78 = 63,400.76/x
  3. Step 3: Cross multiply
    117,115.74x = 161,619.78 × 63,400.76
  4. Step 4: Simplify right side
    117,115.74x = 10,246,816,443.26
  5. Step 5: Solve for x
    x = 10,246,816,443.26/117,115.74
  6. Step 6: Final answer
    x = 87,493.08

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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.