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Finding the Fourth Proportional to 163,518.80, 245,148.60 and 89,646.80

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Solution

The fourth proportional to 163,518.80, 245,148.60 and 89,646.80 is: 134,399.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,518.80 : 245,148.60 = 89,646.80 : x
  2. Step 2: Convert to fraction form
    163,518.80/245,148.60 = 89,646.80/x
  3. Step 3: Cross multiply
    163,518.80x = 245,148.60 × 89,646.80
  4. Step 4: Simplify right side
    163,518.80x = 21,976,787,514.48
  5. Step 5: Solve for x
    x = 21,976,787,514.48/163,518.80
  6. Step 6: Final answer
    x = 134,399.15

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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.