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Finding the Fourth Proportional to 163,970.47, 245,748.48 and 87,879.90

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Solution

The fourth proportional to 163,970.47, 245,748.48 and 87,879.90 is: 131,708.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,970.47 : 245,748.48 = 87,879.90 : x
  2. Step 2: Convert to fraction form
    163,970.47/245,748.48 = 87,879.90/x
  3. Step 3: Cross multiply
    163,970.47x = 245,748.48 × 87,879.90
  4. Step 4: Simplify right side
    163,970.47x = 21,596,351,847.55
  5. Step 5: Solve for x
    x = 21,596,351,847.55/163,970.47
  6. Step 6: Final answer
    x = 131,708.79

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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.