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Finding the Fourth Proportional to 119,554.50, 164,985.21 and 66,562.50

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Solution

The fourth proportional to 119,554.50, 164,985.21 and 66,562.50 is: 91,856.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,554.50 : 164,985.21 = 66,562.50 : x
  2. Step 2: Convert to fraction form
    119,554.50/164,985.21 = 66,562.50/x
  3. Step 3: Cross multiply
    119,554.50x = 164,985.21 × 66,562.50
  4. Step 4: Simplify right side
    119,554.50x = 10,981,828,040.63
  5. Step 5: Solve for x
    x = 10,981,828,040.63/119,554.50
  6. Step 6: Final answer
    x = 91,856.25

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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.