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Finding the Fourth Proportional to 163,531.98, 245,375.42 and 68,782.91

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Solution

The fourth proportional to 163,531.98, 245,375.42 and 68,782.91 is: 103,206.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,531.98 : 245,375.42 = 68,782.91 : x
  2. Step 2: Convert to fraction form
    163,531.98/245,375.42 = 68,782.91/x
  3. Step 3: Cross multiply
    163,531.98x = 245,375.42 × 68,782.91
  4. Step 4: Simplify right side
    163,531.98x = 16,877,633,859.28
  5. Step 5: Solve for x
    x = 16,877,633,859.28/163,531.98
  6. Step 6: Final answer
    x = 103,206.93

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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.