Home / 155,043.48-213,961.32-90,557.76

Finding the Fourth Proportional to 155,043.48, 213,961.32 and 90,557.76

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Solution

The fourth proportional to 155,043.48, 213,961.32 and 90,557.76 is: 124,970.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,043.48 : 213,961.32 = 90,557.76 : x
  2. Step 2: Convert to fraction form
    155,043.48/213,961.32 = 90,557.76/x
  3. Step 3: Cross multiply
    155,043.48x = 213,961.32 × 90,557.76
  4. Step 4: Simplify right side
    155,043.48x = 19,375,857,865.84
  5. Step 5: Solve for x
    x = 19,375,857,865.84/155,043.48
  6. Step 6: Final answer
    x = 124,970.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.