Home / 104,051.20-155,731.20-72,947.20

Finding the Fourth Proportional to 104,051.20, 155,731.20 and 72,947.20

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Solution

The fourth proportional to 104,051.20, 155,731.20 and 72,947.20 is: 109,178.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,051.20 : 155,731.20 = 72,947.20 : x
  2. Step 2: Convert to fraction form
    104,051.20/155,731.20 = 72,947.20/x
  3. Step 3: Cross multiply
    104,051.20x = 155,731.20 × 72,947.20
  4. Step 4: Simplify right side
    104,051.20x = 11,360,154,992.64
  5. Step 5: Solve for x
    x = 11,360,154,992.64/104,051.20
  6. Step 6: Final answer
    x = 109,178.51

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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.