Home / 126,666.74-189,930-51,839.48

Finding the Fourth Proportional to 126,666.74, 189,930 and 51,839.48

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Solution

The fourth proportional to 126,666.74, 189,930 and 51,839.48 is: 77,730.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,666.74 : 189,930 = 51,839.48 : x
  2. Step 2: Convert to fraction form
    126,666.74/189,930 = 51,839.48/x
  3. Step 3: Cross multiply
    126,666.74x = 189,930 × 51,839.48
  4. Step 4: Simplify right side
    126,666.74x = 9,845,872,436.40
  5. Step 5: Solve for x
    x = 9,845,872,436.40/126,666.74
  6. Step 6: Final answer
    x = 77,730.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.