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Finding the Fourth Proportional to 115,214.58, 158,984.88 and 69,287.58

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Solution

The fourth proportional to 115,214.58, 158,984.88 and 69,287.58 is: 95,610.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,214.58 : 158,984.88 = 69,287.58 : x
  2. Step 2: Convert to fraction form
    115,214.58/158,984.88 = 69,287.58/x
  3. Step 3: Cross multiply
    115,214.58x = 158,984.88 × 69,287.58
  4. Step 4: Simplify right side
    115,214.58x = 11,015,677,591.79
  5. Step 5: Solve for x
    x = 11,015,677,591.79/115,214.58
  6. Step 6: Final answer
    x = 95,610.10

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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.