Home / 142,260.09-196,316.60-77,727.92

Finding the Fourth Proportional to 142,260.09, 196,316.60 and 77,727.92

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Solution

The fourth proportional to 142,260.09, 196,316.60 and 77,727.92 is: 107,263.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,260.09 : 196,316.60 = 77,727.92 : x
  2. Step 2: Convert to fraction form
    142,260.09/196,316.60 = 77,727.92/x
  3. Step 3: Cross multiply
    142,260.09x = 196,316.60 × 77,727.92
  4. Step 4: Simplify right side
    142,260.09x = 15,259,279,609.25
  5. Step 5: Solve for x
    x = 15,259,279,609.25/142,260.09
  6. Step 6: Final answer
    x = 107,263.25

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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.