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Finding the Fourth Proportional to 210,102.01, 315,155.76 and 69,860.65

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Solution

The fourth proportional to 210,102.01, 315,155.76 and 69,860.65 is: 104,791.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,102.01 : 315,155.76 = 69,860.65 : x
  2. Step 2: Convert to fraction form
    210,102.01/315,155.76 = 69,860.65/x
  3. Step 3: Cross multiply
    210,102.01x = 315,155.76 × 69,860.65
  4. Step 4: Simplify right side
    210,102.01x = 22,016,986,244.84
  5. Step 5: Solve for x
    x = 22,016,986,244.84/210,102.01
  6. Step 6: Final answer
    x = 104,791.89

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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.