Home / 155,309.82-232,965.05-42,990.36

Finding the Fourth Proportional to 155,309.82, 232,965.05 and 42,990.36

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Solution

The fourth proportional to 155,309.82, 232,965.05 and 42,990.36 is: 64,485.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,309.82 : 232,965.05 = 42,990.36 : x
  2. Step 2: Convert to fraction form
    155,309.82/232,965.05 = 42,990.36/x
  3. Step 3: Cross multiply
    155,309.82x = 232,965.05 × 42,990.36
  4. Step 4: Simplify right side
    155,309.82x = 10,015,251,151.97
  5. Step 5: Solve for x
    x = 10,015,251,151.97/155,309.82
  6. Step 6: Final answer
    x = 64,485.63

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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.