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Finding the Fourth Proportional to 120,065.17, 180,091.23 and 60,899.30

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Solution

The fourth proportional to 120,065.17, 180,091.23 and 60,899.30 is: 91,345.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,065.17 : 180,091.23 = 60,899.30 : x
  2. Step 2: Convert to fraction form
    120,065.17/180,091.23 = 60,899.30/x
  3. Step 3: Cross multiply
    120,065.17x = 180,091.23 × 60,899.30
  4. Step 4: Simplify right side
    120,065.17x = 10,967,429,843.14
  5. Step 5: Solve for x
    x = 10,967,429,843.14/120,065.17
  6. Step 6: Final answer
    x = 91,345.64

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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.