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Finding the Fourth Proportional to 119,805.59, 179,640.93 and 39,800.72

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Solution

The fourth proportional to 119,805.59, 179,640.93 and 39,800.72 is: 59,678.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,805.59 : 179,640.93 = 39,800.72 : x
  2. Step 2: Convert to fraction form
    119,805.59/179,640.93 = 39,800.72/x
  3. Step 3: Cross multiply
    119,805.59x = 179,640.93 × 39,800.72
  4. Step 4: Simplify right side
    119,805.59x = 7,149,837,457.26
  5. Step 5: Solve for x
    x = 7,149,837,457.26/119,805.59
  6. Step 6: Final answer
    x = 59,678.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.