Home / 158,140.48-218,305.20-100,856.76

Finding the Fourth Proportional to 158,140.48, 218,305.20 and 100,856.76

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Solution

The fourth proportional to 158,140.48, 218,305.20 and 100,856.76 is: 139,227.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,140.48 : 218,305.20 = 100,856.76 : x
  2. Step 2: Convert to fraction form
    158,140.48/218,305.20 = 100,856.76/x
  3. Step 3: Cross multiply
    158,140.48x = 218,305.20 × 100,856.76
  4. Step 4: Simplify right side
    158,140.48x = 22,017,555,163.15
  5. Step 5: Solve for x
    x = 22,017,555,163.15/158,140.48
  6. Step 6: Final answer
    x = 139,227.83

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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.