Home / 138,938.80-191,629.74-119,590.64

Finding the Fourth Proportional to 138,938.80, 191,629.74 and 119,590.64

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Solution

The fourth proportional to 138,938.80, 191,629.74 and 119,590.64 is: 164,944.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,938.80 : 191,629.74 = 119,590.64 : x
  2. Step 2: Convert to fraction form
    138,938.80/191,629.74 = 119,590.64/x
  3. Step 3: Cross multiply
    138,938.80x = 191,629.74 × 119,590.64
  4. Step 4: Simplify right side
    138,938.80x = 22,917,123,249.63
  5. Step 5: Solve for x
    x = 22,917,123,249.63/138,938.80
  6. Step 6: Final answer
    x = 164,944.01

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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.