Home / 120,729.28-180,958.38-56,718.76

Finding the Fourth Proportional to 120,729.28, 180,958.38 and 56,718.76

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Solution

The fourth proportional to 120,729.28, 180,958.38 and 56,718.76 is: 85,014.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,729.28 : 180,958.38 = 56,718.76 : x
  2. Step 2: Convert to fraction form
    120,729.28/180,958.38 = 56,718.76/x
  3. Step 3: Cross multiply
    120,729.28x = 180,958.38 × 56,718.76
  4. Step 4: Simplify right side
    120,729.28x = 10,263,734,925.21
  5. Step 5: Solve for x
    x = 10,263,734,925.21/120,729.28
  6. Step 6: Final answer
    x = 85,014.46

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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.