Home / 155,777.13-215,044.20-91,237.41

Finding the Fourth Proportional to 155,777.13, 215,044.20 and 91,237.41

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Solution

The fourth proportional to 155,777.13, 215,044.20 and 91,237.41 is: 125,949.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,777.13 : 215,044.20 = 91,237.41 : x
  2. Step 2: Convert to fraction form
    155,777.13/215,044.20 = 91,237.41/x
  3. Step 3: Cross multiply
    155,777.13x = 215,044.20 × 91,237.41
  4. Step 4: Simplify right side
    155,777.13x = 19,620,075,843.52
  5. Step 5: Solve for x
    x = 19,620,075,843.52/155,777.13
  6. Step 6: Final answer
    x = 125,949.66

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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.