Home / 138,984.80-191,799.09-75,322.58

Finding the Fourth Proportional to 138,984.80, 191,799.09 and 75,322.58

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Solution

The fourth proportional to 138,984.80, 191,799.09 and 75,322.58 is: 103,945.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,984.80 : 191,799.09 = 75,322.58 : x
  2. Step 2: Convert to fraction form
    138,984.80/191,799.09 = 75,322.58/x
  3. Step 3: Cross multiply
    138,984.80x = 191,799.09 × 75,322.58
  4. Step 4: Simplify right side
    138,984.80x = 14,446,801,341.46
  5. Step 5: Solve for x
    x = 14,446,801,341.46/138,984.80
  6. Step 6: Final answer
    x = 103,945.19

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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.