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Finding the Fourth Proportional to 119,712.51, 165,204.42 and 65,999.49

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Solution

The fourth proportional to 119,712.51, 165,204.42 and 65,999.49 is: 91,079.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,712.51 : 165,204.42 = 65,999.49 : x
  2. Step 2: Convert to fraction form
    119,712.51/165,204.42 = 65,999.49/x
  3. Step 3: Cross multiply
    119,712.51x = 165,204.42 × 65,999.49
  4. Step 4: Simplify right side
    119,712.51x = 10,903,407,465.75
  5. Step 5: Solve for x
    x = 10,903,407,465.75/119,712.51
  6. Step 6: Final answer
    x = 91,079.93

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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.