Home / 138,809.46-191,557.12-75,147.26

Finding the Fourth Proportional to 138,809.46, 191,557.12 and 75,147.26

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Solution

The fourth proportional to 138,809.46, 191,557.12 and 75,147.26 is: 103,703.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,809.46 : 191,557.12 = 75,147.26 : x
  2. Step 2: Convert to fraction form
    138,809.46/191,557.12 = 75,147.26/x
  3. Step 3: Cross multiply
    138,809.46x = 191,557.12 × 75,147.26
  4. Step 4: Simplify right side
    138,809.46x = 14,394,992,701.49
  5. Step 5: Solve for x
    x = 14,394,992,701.49/138,809.46
  6. Step 6: Final answer
    x = 103,703.25

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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.