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Finding the Fourth Proportional to 158,151.22, 218,246.74 and 86,530.21

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Solution

The fourth proportional to 158,151.22, 218,246.74 and 86,530.21 is: 119,410.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,151.22 : 218,246.74 = 86,530.21 : x
  2. Step 2: Convert to fraction form
    158,151.22/218,246.74 = 86,530.21/x
  3. Step 3: Cross multiply
    158,151.22x = 218,246.74 × 86,530.21
  4. Step 4: Simplify right side
    158,151.22x = 18,884,936,244.02
  5. Step 5: Solve for x
    x = 18,884,936,244.02/158,151.22
  6. Step 6: Final answer
    x = 119,410.63

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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.