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Finding the Fourth Proportional to 119,610, 165,069.36 and 65,895.12

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Solution

The fourth proportional to 119,610, 165,069.36 and 65,895.12 is: 90,939.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,610 : 165,069.36 = 65,895.12 : x
  2. Step 2: Convert to fraction form
    119,610/165,069.36 = 65,895.12/x
  3. Step 3: Cross multiply
    119,610x = 165,069.36 × 65,895.12
  4. Step 4: Simplify right side
    119,610x = 10,877,265,285.52
  5. Step 5: Solve for x
    x = 10,877,265,285.52/119,610
  6. Step 6: Final answer
    x = 90,939.43

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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.