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Finding the Fourth Proportional to 108,779.88, 150,118.56 and 61,036.68

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Solution

The fourth proportional to 108,779.88, 150,118.56 and 61,036.68 is: 84,231.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,779.88 : 150,118.56 = 61,036.68 : x
  2. Step 2: Convert to fraction form
    108,779.88/150,118.56 = 61,036.68/x
  3. Step 3: Cross multiply
    108,779.88x = 150,118.56 × 61,036.68
  4. Step 4: Simplify right side
    108,779.88x = 9,162,738,508.78
  5. Step 5: Solve for x
    x = 9,162,738,508.78/108,779.88
  6. Step 6: Final answer
    x = 84,231.92

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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.