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Finding the Fourth Proportional to 115,796.40, 159,801.90 and 64,808.70

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Solution

The fourth proportional to 115,796.40, 159,801.90 and 64,808.70 is: 89,437.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,796.40 : 159,801.90 = 64,808.70 : x
  2. Step 2: Convert to fraction form
    115,796.40/159,801.90 = 64,808.70/x
  3. Step 3: Cross multiply
    115,796.40x = 159,801.90 × 64,808.70
  4. Step 4: Simplify right side
    115,796.40x = 10,356,553,396.53
  5. Step 5: Solve for x
    x = 10,356,553,396.53/115,796.40
  6. Step 6: Final answer
    x = 89,437.61

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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.