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Finding the Fourth Proportional to 163,828.80, 245,548.80 and 84,902.40

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Solution

The fourth proportional to 163,828.80, 245,548.80 and 84,902.40 is: 127,252.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,828.80 : 245,548.80 = 84,902.40 : x
  2. Step 2: Convert to fraction form
    163,828.80/245,548.80 = 84,902.40/x
  3. Step 3: Cross multiply
    163,828.80x = 245,548.80 × 84,902.40
  4. Step 4: Simplify right side
    163,828.80x = 20,847,682,437.12
  5. Step 5: Solve for x
    x = 20,847,682,437.12/163,828.80
  6. Step 6: Final answer
    x = 127,252.85

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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.