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Finding the Fourth Proportional to 104,057.20, 155,740.20 and 72,953.20

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Solution

The fourth proportional to 104,057.20, 155,740.20 and 72,953.20 is: 109,187.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,057.20 : 155,740.20 = 72,953.20 : x
  2. Step 2: Convert to fraction form
    104,057.20/155,740.20 = 72,953.20/x
  3. Step 3: Cross multiply
    104,057.20x = 155,740.20 × 72,953.20
  4. Step 4: Simplify right side
    104,057.20x = 11,361,745,958.64
  5. Step 5: Solve for x
    x = 11,361,745,958.64/104,057.20
  6. Step 6: Final answer
    x = 109,187.50

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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.