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Finding the Fourth Proportional to 119,359.40, 164,719.43 and 65,647.88

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Solution

The fourth proportional to 119,359.40, 164,719.43 and 65,647.88 is: 90,595.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,359.40 : 164,719.43 = 65,647.88 : x
  2. Step 2: Convert to fraction form
    119,359.40/164,719.43 = 65,647.88/x
  3. Step 3: Cross multiply
    119,359.40x = 164,719.43 × 65,647.88
  4. Step 4: Simplify right side
    119,359.40x = 10,813,481,374.31
  5. Step 5: Solve for x
    x = 10,813,481,374.31/119,359.40
  6. Step 6: Final answer
    x = 90,595.98

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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.