Home / 155,369.07-214,415.71-87,389.21

Finding the Fourth Proportional to 155,369.07, 214,415.71 and 87,389.21

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Solution

The fourth proportional to 155,369.07, 214,415.71 and 87,389.21 is: 120,600.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,369.07 : 214,415.71 = 87,389.21 : x
  2. Step 2: Convert to fraction form
    155,369.07/214,415.71 = 87,389.21/x
  3. Step 3: Cross multiply
    155,369.07x = 214,415.71 × 87,389.21
  4. Step 4: Simplify right side
    155,369.07x = 18,737,619,826.06
  5. Step 5: Solve for x
    x = 18,737,619,826.06/155,369.07
  6. Step 6: Final answer
    x = 120,600.71

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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.