Home / 126,347.51-189,219.13-72,877.41

Finding the Fourth Proportional to 126,347.51, 189,219.13 and 72,877.41

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Solution

The fourth proportional to 126,347.51, 189,219.13 and 72,877.41 is: 109,141.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,347.51 : 189,219.13 = 72,877.41 : x
  2. Step 2: Convert to fraction form
    126,347.51/189,219.13 = 72,877.41/x
  3. Step 3: Cross multiply
    126,347.51x = 189,219.13 × 72,877.41
  4. Step 4: Simplify right side
    126,347.51x = 13,789,799,934.66
  5. Step 5: Solve for x
    x = 13,789,799,934.66/126,347.51
  6. Step 6: Final answer
    x = 109,141.84

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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.