Home / 120,187.37-180,153.92-45,275.09

Finding the Fourth Proportional to 120,187.37, 180,153.92 and 45,275.09

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Solution

The fourth proportional to 120,187.37, 180,153.92 and 45,275.09 is: 67,864.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,187.37 : 180,153.92 = 45,275.09 : x
  2. Step 2: Convert to fraction form
    120,187.37/180,153.92 = 45,275.09/x
  3. Step 3: Cross multiply
    120,187.37x = 180,153.92 × 45,275.09
  4. Step 4: Simplify right side
    120,187.37x = 8,156,484,941.85
  5. Step 5: Solve for x
    x = 8,156,484,941.85/120,187.37
  6. Step 6: Final answer
    x = 67,864.75

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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.