Home / 126,502.21-189,784.45-89,135.25

Finding the Fourth Proportional to 126,502.21, 189,784.45 and 89,135.25

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Solution

The fourth proportional to 126,502.21, 189,784.45 and 89,135.25 is: 133,724.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,502.21 : 189,784.45 = 89,135.25 : x
  2. Step 2: Convert to fraction form
    126,502.21/189,784.45 = 89,135.25/x
  3. Step 3: Cross multiply
    126,502.21x = 189,784.45 × 89,135.25
  4. Step 4: Simplify right side
    126,502.21x = 16,916,484,864.13
  5. Step 5: Solve for x
    x = 16,916,484,864.13/126,502.21
  6. Step 6: Final answer
    x = 133,724.82

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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.