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Finding the Fourth Proportional to 119,472.81, 164,871.21 and 65,756.67

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Solution

The fourth proportional to 119,472.81, 164,871.21 and 65,756.67 is: 90,743.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,472.81 : 164,871.21 = 65,756.67 : x
  2. Step 2: Convert to fraction form
    119,472.81/164,871.21 = 65,756.67/x
  3. Step 3: Cross multiply
    119,472.81x = 164,871.21 × 65,756.67
  4. Step 4: Simplify right side
    119,472.81x = 10,841,381,748.47
  5. Step 5: Solve for x
    x = 10,841,381,748.47/119,472.81
  6. Step 6: Final answer
    x = 90,743.51

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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.