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Finding the Fourth Proportional to 108,779.66, 150,115.78 and 61,037.45

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Solution

The fourth proportional to 108,779.66, 150,115.78 and 61,037.45 is: 84,231.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,779.66 : 150,115.78 = 61,037.45 : x
  2. Step 2: Convert to fraction form
    108,779.66/150,115.78 = 61,037.45/x
  3. Step 3: Cross multiply
    108,779.66x = 150,115.78 × 61,037.45
  4. Step 4: Simplify right side
    108,779.66x = 9,162,684,415.96
  5. Step 5: Solve for x
    x = 9,162,684,415.96/108,779.66
  6. Step 6: Final answer
    x = 84,231.60

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1.5x scale

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.