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Finding the Fourth Proportional to 152,448.62, 210,394.67 and 87,920.37

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Solution

The fourth proportional to 152,448.62, 210,394.67 and 87,920.37 is: 121,339.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,448.62 : 210,394.67 = 87,920.37 : x
  2. Step 2: Convert to fraction form
    152,448.62/210,394.67 = 87,920.37/x
  3. Step 3: Cross multiply
    152,448.62x = 210,394.67 × 87,920.37
  4. Step 4: Simplify right side
    152,448.62x = 18,497,976,792.83
  5. Step 5: Solve for x
    x = 18,497,976,792.83/152,448.62
  6. Step 6: Final answer
    x = 121,339.09

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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.