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Finding the Fourth Proportional to 115,160.25, 158,921.42 and 64,859.25

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Solution

The fourth proportional to 115,160.25, 158,921.42 and 64,859.25 is: 89,505.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,160.25 : 158,921.42 = 64,859.25 : x
  2. Step 2: Convert to fraction form
    115,160.25/158,921.42 = 64,859.25/x
  3. Step 3: Cross multiply
    115,160.25x = 158,921.42 × 64,859.25
  4. Step 4: Simplify right side
    115,160.25x = 10,307,523,785.84
  5. Step 5: Solve for x
    x = 10,307,523,785.84/115,160.25
  6. Step 6: Final answer
    x = 89,505.92

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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.