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Finding the Fourth Proportional to 163,565.19, 245,352.65 and 45,245.25

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Solution

The fourth proportional to 163,565.19, 245,352.65 and 45,245.25 is: 67,869.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,565.19 : 245,352.65 = 45,245.25 : x
  2. Step 2: Convert to fraction form
    163,565.19/245,352.65 = 45,245.25/x
  3. Step 3: Cross multiply
    163,565.19x = 245,352.65 × 45,245.25
  4. Step 4: Simplify right side
    163,565.19x = 11,101,041,761.19
  5. Step 5: Solve for x
    x = 11,101,041,761.19/163,565.19
  6. Step 6: Final answer
    x = 67,869.22

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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.