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Finding the Fourth Proportional to 108,784.15, 150,121.69 and 61,037.67

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Solution

The fourth proportional to 108,784.15, 150,121.69 and 61,037.67 is: 84,231.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,784.15 : 150,121.69 = 61,037.67 : x
  2. Step 2: Convert to fraction form
    108,784.15/150,121.69 = 61,037.67/x
  3. Step 3: Cross multiply
    108,784.15x = 150,121.69 × 61,037.67
  4. Step 4: Simplify right side
    108,784.15x = 9,163,078,174.06
  5. Step 5: Solve for x
    x = 9,163,078,174.06/108,784.15
  6. Step 6: Final answer
    x = 84,231.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.