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Finding the Fourth Proportional to 126,119.84, 189,179.75 and 119,813.18

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Solution

The fourth proportional to 126,119.84, 189,179.75 and 119,813.18 is: 179,719.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,119.84 : 189,179.75 = 119,813.18 : x
  2. Step 2: Convert to fraction form
    126,119.84/189,179.75 = 119,813.18/x
  3. Step 3: Cross multiply
    126,119.84x = 189,179.75 × 119,813.18
  4. Step 4: Simplify right side
    126,119.84x = 22,666,226,792.74
  5. Step 5: Solve for x
    x = 22,666,226,792.74/126,119.84
  6. Step 6: Final answer
    x = 179,719.76

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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.