Home / 138,849.58-191,612.05-75,187.36

Finding the Fourth Proportional to 138,849.58, 191,612.05 and 75,187.36

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Solution

The fourth proportional to 138,849.58, 191,612.05 and 75,187.36 is: 103,758.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,849.58 : 191,612.05 = 75,187.36 : x
  2. Step 2: Convert to fraction form
    138,849.58/191,612.05 = 75,187.36/x
  3. Step 3: Cross multiply
    138,849.58x = 191,612.05 × 75,187.36
  4. Step 4: Simplify right side
    138,849.58x = 14,406,804,183.69
  5. Step 5: Solve for x
    x = 14,406,804,183.69/138,849.58
  6. Step 6: Final answer
    x = 103,758.36

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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.