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Finding the Fourth Proportional to 119,342.28, 164,693 and 65,630.76

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Solution

The fourth proportional to 119,342.28, 164,693 and 65,630.76 is: 90,570.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,342.28 : 164,693 = 65,630.76 : x
  2. Step 2: Convert to fraction form
    119,342.28/164,693 = 65,630.76/x
  3. Step 3: Cross multiply
    119,342.28x = 164,693 × 65,630.76
  4. Step 4: Simplify right side
    119,342.28x = 10,808,926,756.68
  5. Step 5: Solve for x
    x = 10,808,926,756.68/119,342.28
  6. Step 6: Final answer
    x = 90,570.81

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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.