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Finding the Fourth Proportional to 119,399.85, 164,770.04 and 65,681.67

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Solution

The fourth proportional to 119,399.85, 164,770.04 and 65,681.67 is: 90,639.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,399.85 : 164,770.04 = 65,681.67 : x
  2. Step 2: Convert to fraction form
    119,399.85/164,770.04 = 65,681.67/x
  3. Step 3: Cross multiply
    119,399.85x = 164,770.04 × 65,681.67
  4. Step 4: Simplify right side
    119,399.85x = 10,822,371,064.76
  5. Step 5: Solve for x
    x = 10,822,371,064.76/119,399.85
  6. Step 6: Final answer
    x = 90,639.74

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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.