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Finding the Fourth Proportional to 163,688.91, 245,450.31 and 74,866.31

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Solution

The fourth proportional to 163,688.91, 245,450.31 and 74,866.31 is: 112,261.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,688.91 : 245,450.31 = 74,866.31 : x
  2. Step 2: Convert to fraction form
    163,688.91/245,450.31 = 74,866.31/x
  3. Step 3: Cross multiply
    163,688.91x = 245,450.31 × 74,866.31
  4. Step 4: Simplify right side
    163,688.91x = 18,375,957,770.80
  5. Step 5: Solve for x
    x = 18,375,957,770.80/163,688.91
  6. Step 6: Final answer
    x = 112,261.47

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1.5x scale

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.