Home / 126,356.76-189,491.40-70,282.08

Finding the Fourth Proportional to 126,356.76, 189,491.40 and 70,282.08

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Solution

The fourth proportional to 126,356.76, 189,491.40 and 70,282.08 is: 105,398.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,356.76 : 189,491.40 = 70,282.08 : x
  2. Step 2: Convert to fraction form
    126,356.76/189,491.40 = 70,282.08/x
  3. Step 3: Cross multiply
    126,356.76x = 189,491.40 × 70,282.08
  4. Step 4: Simplify right side
    126,356.76x = 13,317,849,734.11
  5. Step 5: Solve for x
    x = 13,317,849,734.11/126,356.76
  6. Step 6: Final answer
    x = 105,398.79

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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.