Home / 135,148,921-186,659,475.78-91,613,274.28

Finding the Fourth Proportional to 135,148,921, 186,659,475.78 and 91,613,274.28

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Solution

The fourth proportional to 135,148,921, 186,659,475.78 and 91,613,274.28 is: 126,530,686.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,148,921 : 186,659,475.78 = 91,613,274.28 : x
  2. Step 2: Convert to fraction form
    135,148,921/186,659,475.78 = 91,613,274.28/x
  3. Step 3: Cross multiply
    135,148,921x = 186,659,475.78 × 91,613,274.28
  4. Step 4: Simplify right side
    135,148,921x = 17,100,485,751,594,158
  5. Step 5: Solve for x
    x = 17,100,485,751,594,158/135,148,921
  6. Step 6: Final answer
    x = 126,530,686.48

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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.