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Finding the Fourth Proportional to 115,188.71, 158,969.66 and 64,217.94

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Solution

The fourth proportional to 115,188.71, 158,969.66 and 64,217.94 is: 88,625.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,188.71 : 158,969.66 = 64,217.94 : x
  2. Step 2: Convert to fraction form
    115,188.71/158,969.66 = 64,217.94/x
  3. Step 3: Cross multiply
    115,188.71x = 158,969.66 × 64,217.94
  4. Step 4: Simplify right side
    115,188.71x = 10,208,703,170.47
  5. Step 5: Solve for x
    x = 10,208,703,170.47/115,188.71
  6. Step 6: Final answer
    x = 88,625.90

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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.