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Finding the Fourth Proportional to 147,757.80, 221,490.90 and 72,816.60

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Solution

The fourth proportional to 147,757.80, 221,490.90 and 72,816.60 is: 109,153.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,757.80 : 221,490.90 = 72,816.60 : x
  2. Step 2: Convert to fraction form
    147,757.80/221,490.90 = 72,816.60/x
  3. Step 3: Cross multiply
    147,757.80x = 221,490.90 × 72,816.60
  4. Step 4: Simplify right side
    147,757.80x = 16,128,214,268.94
  5. Step 5: Solve for x
    x = 16,128,214,268.94/147,757.80
  6. Step 6: Final answer
    x = 109,153.05

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1.5x scale

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.