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Finding the Fourth Proportional to 119,399.76, 164,775.51 and 65,690.73

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Solution

The fourth proportional to 119,399.76, 164,775.51 and 65,690.73 is: 90,655.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,399.76 : 164,775.51 = 65,690.73 : x
  2. Step 2: Convert to fraction form
    119,399.76/164,775.51 = 65,690.73/x
  3. Step 3: Cross multiply
    119,399.76x = 164,775.51 × 65,690.73
  4. Step 4: Simplify right side
    119,399.76x = 10,824,223,538.02
  5. Step 5: Solve for x
    x = 10,824,223,538.02/119,399.76
  6. Step 6: Final answer
    x = 90,655.32

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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.