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Finding the Fourth Proportional to 163,818.70, 245,715.90 and 69,024.40

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Solution

The fourth proportional to 163,818.70, 245,715.90 and 69,024.40 is: 103,531.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,818.70 : 245,715.90 = 69,024.40 : x
  2. Step 2: Convert to fraction form
    163,818.70/245,715.90 = 69,024.40/x
  3. Step 3: Cross multiply
    163,818.70x = 245,715.90 × 69,024.40
  4. Step 4: Simplify right side
    163,818.70x = 16,960,392,567.96
  5. Step 5: Solve for x
    x = 16,960,392,567.96/163,818.70
  6. Step 6: Final answer
    x = 103,531.48

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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.