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Finding the Fourth Proportional to 116,858.39, 161,225.88 and 65,864.84

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Solution

The fourth proportional to 116,858.39, 161,225.88 and 65,864.84 is: 90,871.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,858.39 : 161,225.88 = 65,864.84 : x
  2. Step 2: Convert to fraction form
    116,858.39/161,225.88 = 65,864.84/x
  3. Step 3: Cross multiply
    116,858.39x = 161,225.88 × 65,864.84
  4. Step 4: Simplify right side
    116,858.39x = 10,619,115,983.93
  5. Step 5: Solve for x
    x = 10,619,115,983.93/116,858.39
  6. Step 6: Final answer
    x = 90,871.66

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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.