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Finding the Fourth Proportional to 152,744.43, 210,780 and 84,760.59

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Solution

The fourth proportional to 152,744.43, 210,780 and 84,760.59 is: 116,965.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,744.43 : 210,780 = 84,760.59 : x
  2. Step 2: Convert to fraction form
    152,744.43/210,780 = 84,760.59/x
  3. Step 3: Cross multiply
    152,744.43x = 210,780 × 84,760.59
  4. Step 4: Simplify right side
    152,744.43x = 17,865,837,160.20
  5. Step 5: Solve for x
    x = 17,865,837,160.20/152,744.43
  6. Step 6: Final answer
    x = 116,965.56

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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.