Home / 120,178.02-180,139.90-45,265.75

Finding the Fourth Proportional to 120,178.02, 180,139.90 and 45,265.75

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Solution

The fourth proportional to 120,178.02, 180,139.90 and 45,265.75 is: 67,850.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,178.02 : 180,139.90 = 45,265.75 : x
  2. Step 2: Convert to fraction form
    120,178.02/180,139.90 = 45,265.75/x
  3. Step 3: Cross multiply
    120,178.02x = 180,139.90 × 45,265.75
  4. Step 4: Simplify right side
    120,178.02x = 8,154,167,678.43
  5. Step 5: Solve for x
    x = 8,154,167,678.43/120,178.02
  6. Step 6: Final answer
    x = 67,850.74

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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.