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Finding the Fourth Proportional to 119,443.85, 164,829.01 and 65,728.83

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Solution

The fourth proportional to 119,443.85, 164,829.01 and 65,728.83 is: 90,703.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,443.85 : 164,829.01 = 65,728.83 : x
  2. Step 2: Convert to fraction form
    119,443.85/164,829.01 = 65,728.83/x
  3. Step 3: Cross multiply
    119,443.85x = 164,829.01 × 65,728.83
  4. Step 4: Simplify right side
    119,443.85x = 10,834,017,977.36
  5. Step 5: Solve for x
    x = 10,834,017,977.36/119,443.85
  6. Step 6: Final answer
    x = 90,703.86

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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.