Home / 138,631.58-191,363.43-107,944.01

Finding the Fourth Proportional to 138,631.58, 191,363.43 and 107,944.01

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Solution

The fourth proportional to 138,631.58, 191,363.43 and 107,944.01 is: 149,003.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,631.58 : 191,363.43 = 107,944.01 : x
  2. Step 2: Convert to fraction form
    138,631.58/191,363.43 = 107,944.01/x
  3. Step 3: Cross multiply
    138,631.58x = 191,363.43 × 107,944.01
  4. Step 4: Simplify right side
    138,631.58x = 20,656,536,001.55
  5. Step 5: Solve for x
    x = 20,656,536,001.55/138,631.58
  6. Step 6: Final answer
    x = 149,003.11

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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.