Home / 126,320.12-189,368.69-51,502.85

Finding the Fourth Proportional to 126,320.12, 189,368.69 and 51,502.85

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Solution

The fourth proportional to 126,320.12, 189,368.69 and 51,502.85 is: 77,208.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,320.12 : 189,368.69 = 51,502.85 : x
  2. Step 2: Convert to fraction form
    126,320.12/189,368.69 = 51,502.85/x
  3. Step 3: Cross multiply
    126,320.12x = 189,368.69 × 51,502.85
  4. Step 4: Simplify right side
    126,320.12x = 9,753,026,031.41
  5. Step 5: Solve for x
    x = 9,753,026,031.41/126,320.12
  6. Step 6: Final answer
    x = 77,208.81

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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.