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Finding the Fourth Proportional to 163,615.70, 245,423.55 and 162,578.90

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Solution

The fourth proportional to 163,615.70, 245,423.55 and 162,578.90 is: 243,868.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,615.70 : 245,423.55 = 162,578.90 : x
  2. Step 2: Convert to fraction form
    163,615.70/245,423.55 = 162,578.90/x
  3. Step 3: Cross multiply
    163,615.70x = 245,423.55 × 162,578.90
  4. Step 4: Simplify right side
    163,615.70x = 39,900,690,793.10
  5. Step 5: Solve for x
    x = 39,900,690,793.10/163,615.70
  6. Step 6: Final answer
    x = 243,868.35

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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.