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Finding the Fourth Proportional to 163,823.70, 245,723.40 and 69,029.40

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Solution

The fourth proportional to 163,823.70, 245,723.40 and 69,029.40 is: 103,538.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,823.70 : 245,723.40 = 69,029.40 : x
  2. Step 2: Convert to fraction form
    163,823.70/245,723.40 = 69,029.40/x
  3. Step 3: Cross multiply
    163,823.70x = 245,723.40 × 69,029.40
  4. Step 4: Simplify right side
    163,823.70x = 16,962,138,867.96
  5. Step 5: Solve for x
    x = 16,962,138,867.96/163,823.70
  6. Step 6: Final answer
    x = 103,538.98

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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.