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Finding the Fourth Proportional to 152,791.85, 210,850.70 and 84,808.65

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Solution

The fourth proportional to 152,791.85, 210,850.70 and 84,808.65 is: 117,034.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,791.85 : 210,850.70 = 84,808.65 : x
  2. Step 2: Convert to fraction form
    152,791.85/210,850.70 = 84,808.65/x
  3. Step 3: Cross multiply
    152,791.85x = 210,850.70 × 84,808.65
  4. Step 4: Simplify right side
    152,791.85x = 17,881,962,794.51
  5. Step 5: Solve for x
    x = 17,881,962,794.51/152,791.85
  6. Step 6: Final answer
    x = 117,034.80

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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.