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Finding the Fourth Proportional to 119,860.74, 179,820.38 and 39,898.55

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Solution

The fourth proportional to 119,860.74, 179,820.38 and 39,898.55 is: 59,857.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,860.74 : 179,820.38 = 39,898.55 : x
  2. Step 2: Convert to fraction form
    119,860.74/179,820.38 = 39,898.55/x
  3. Step 3: Cross multiply
    119,860.74x = 179,820.38 × 39,898.55
  4. Step 4: Simplify right side
    119,860.74x = 7,174,572,353.79
  5. Step 5: Solve for x
    x = 7,174,572,353.79/119,860.74
  6. Step 6: Final answer
    x = 59,857.57

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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.