Home / 155,108.28-232,731.54-81,219

Finding the Fourth Proportional to 155,108.28, 232,731.54 and 81,219

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Solution

The fourth proportional to 155,108.28, 232,731.54 and 81,219 is: 121,864.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,108.28 : 232,731.54 = 81,219 : x
  2. Step 2: Convert to fraction form
    155,108.28/232,731.54 = 81,219/x
  3. Step 3: Cross multiply
    155,108.28x = 232,731.54 × 81,219
  4. Step 4: Simplify right side
    155,108.28x = 18,902,222,947.26
  5. Step 5: Solve for x
    x = 18,902,222,947.26/155,108.28
  6. Step 6: Final answer
    x = 121,864.69

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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.