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Finding the Fourth Proportional to 152,650.80, 210,668.31 and 84,689.37

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Solution

The fourth proportional to 152,650.80, 210,668.31 and 84,689.37 is: 116,876.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,650.80 : 210,668.31 = 84,689.37 : x
  2. Step 2: Convert to fraction form
    152,650.80/210,668.31 = 84,689.37/x
  3. Step 3: Cross multiply
    152,650.80x = 210,668.31 × 84,689.37
  4. Step 4: Simplify right side
    152,650.80x = 17,841,366,452.86
  5. Step 5: Solve for x
    x = 17,841,366,452.86/152,650.80
  6. Step 6: Final answer
    x = 116,876.99

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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.