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Finding the Fourth Proportional to 119,370, 164,731.98 and 65,655.90

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Solution

The fourth proportional to 119,370, 164,731.98 and 65,655.90 is: 90,605.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,370 : 164,731.98 = 65,655.90 : x
  2. Step 2: Convert to fraction form
    119,370/164,731.98 = 65,655.90/x
  3. Step 3: Cross multiply
    119,370x = 164,731.98 × 65,655.90
  4. Step 4: Simplify right side
    119,370x = 10,815,626,405.68
  5. Step 5: Solve for x
    x = 10,815,626,405.68/119,370
  6. Step 6: Final answer
    x = 90,605.90

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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.