Home / 155,263.20-214,285.86-87,285.78

Finding the Fourth Proportional to 155,263.20, 214,285.86 and 87,285.78

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Solution

The fourth proportional to 155,263.20, 214,285.86 and 87,285.78 is: 120,467.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,263.20 : 214,285.86 = 87,285.78 : x
  2. Step 2: Convert to fraction form
    155,263.20/214,285.86 = 87,285.78/x
  3. Step 3: Cross multiply
    155,263.20x = 214,285.86 × 87,285.78
  4. Step 4: Simplify right side
    155,263.20x = 18,704,108,433.07
  5. Step 5: Solve for x
    x = 18,704,108,433.07/155,263.20
  6. Step 6: Final answer
    x = 120,467.11

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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.