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Finding the Fourth Proportional to 119,390.56, 164,752.48 and 65,666.90

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Solution

The fourth proportional to 119,390.56, 164,752.48 and 65,666.90 is: 90,616.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,390.56 : 164,752.48 = 65,666.90 : x
  2. Step 2: Convert to fraction form
    119,390.56/164,752.48 = 65,666.90/x
  3. Step 3: Cross multiply
    119,390.56x = 164,752.48 × 65,666.90
  4. Step 4: Simplify right side
    119,390.56x = 10,818,785,122.88
  5. Step 5: Solve for x
    x = 10,818,785,122.88/119,390.56
  6. Step 6: Final answer
    x = 90,616.76

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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.