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Finding the Fourth Proportional to 163,739.80, 245,480.10 and 89,867.80

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Solution

The fourth proportional to 163,739.80, 245,480.10 and 89,867.80 is: 134,730.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,739.80 : 245,480.10 = 89,867.80 : x
  2. Step 2: Convert to fraction form
    163,739.80/245,480.10 = 89,867.80/x
  3. Step 3: Cross multiply
    163,739.80x = 245,480.10 × 89,867.80
  4. Step 4: Simplify right side
    163,739.80x = 22,060,756,530.78
  5. Step 5: Solve for x
    x = 22,060,756,530.78/163,739.80
  6. Step 6: Final answer
    x = 134,730.57

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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.