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Finding the Fourth Proportional to 134,847.80, 202,328.40 and 72,445.40

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Solution

The fourth proportional to 134,847.80, 202,328.40 and 72,445.40 is: 108,698.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,847.80 : 202,328.40 = 72,445.40 : x
  2. Step 2: Convert to fraction form
    134,847.80/202,328.40 = 72,445.40/x
  3. Step 3: Cross multiply
    134,847.80x = 202,328.40 × 72,445.40
  4. Step 4: Simplify right side
    134,847.80x = 14,657,761,869.36
  5. Step 5: Solve for x
    x = 14,657,761,869.36/134,847.80
  6. Step 6: Final answer
    x = 108,698.56

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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.