Home / 100,470.06-138,624.82-56,863.17

Finding the Fourth Proportional to 100,470.06, 138,624.82 and 56,863.17

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Solution

The fourth proportional to 100,470.06, 138,624.82 and 56,863.17 is: 78,457.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,470.06 : 138,624.82 = 56,863.17 : x
  2. Step 2: Convert to fraction form
    100,470.06/138,624.82 = 56,863.17/x
  3. Step 3: Cross multiply
    100,470.06x = 138,624.82 × 56,863.17
  4. Step 4: Simplify right side
    100,470.06x = 7,882,646,705.88
  5. Step 5: Solve for x
    x = 7,882,646,705.88/100,470.06
  6. Step 6: Final answer
    x = 78,457.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.