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Finding the Fourth Proportional to 163,789.71, 245,744.64 and 69,043.74

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Solution

The fourth proportional to 163,789.71, 245,744.64 and 69,043.74 is: 103,590.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,789.71 : 245,744.64 = 69,043.74 : x
  2. Step 2: Convert to fraction form
    163,789.71/245,744.64 = 69,043.74/x
  3. Step 3: Cross multiply
    163,789.71x = 245,744.64 × 69,043.74
  4. Step 4: Simplify right side
    163,789.71x = 16,967,129,030.55
  5. Step 5: Solve for x
    x = 16,967,129,030.55/163,789.71
  6. Step 6: Final answer
    x = 103,590.93

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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.