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Finding the Fourth Proportional to 109,269.64, 150,779.64 and 61,521.76

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Solution

The fourth proportional to 109,269.64, 150,779.64 and 61,521.76 is: 84,893.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,269.64 : 150,779.64 = 61,521.76 : x
  2. Step 2: Convert to fraction form
    109,269.64/150,779.64 = 61,521.76/x
  3. Step 3: Cross multiply
    109,269.64x = 150,779.64 × 61,521.76
  4. Step 4: Simplify right side
    109,269.64x = 9,276,228,824.97
  5. Step 5: Solve for x
    x = 9,276,228,824.97/109,269.64
  6. Step 6: Final answer
    x = 84,893.01

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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.