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Finding the Fourth Proportional to 163,403.40, 245,105.10 and 137,159.40

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Solution

The fourth proportional to 163,403.40, 245,105.10 and 137,159.40 is: 205,739.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,403.40 : 245,105.10 = 137,159.40 : x
  2. Step 2: Convert to fraction form
    163,403.40/245,105.10 = 137,159.40/x
  3. Step 3: Cross multiply
    163,403.40x = 245,105.10 × 137,159.40
  4. Step 4: Simplify right side
    163,403.40x = 33,618,468,452.94
  5. Step 5: Solve for x
    x = 33,618,468,452.94/163,403.40
  6. Step 6: Final answer
    x = 205,739.10

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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.