Home / 120,148.81-180,223.22-45,285.75

Finding the Fourth Proportional to 120,148.81, 180,223.22 and 45,285.75

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Solution

The fourth proportional to 120,148.81, 180,223.22 and 45,285.75 is: 67,928.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,148.81 : 180,223.22 = 45,285.75 : x
  2. Step 2: Convert to fraction form
    120,148.81/180,223.22 = 45,285.75/x
  3. Step 3: Cross multiply
    120,148.81x = 180,223.22 × 45,285.75
  4. Step 4: Simplify right side
    120,148.81x = 8,161,543,798.33
  5. Step 5: Solve for x
    x = 8,161,543,798.33/120,148.81
  6. Step 6: Final answer
    x = 67,928.63

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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.