Home / 155,475.75-214,560.67-87,495.15

Finding the Fourth Proportional to 155,475.75, 214,560.67 and 87,495.15

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Solution

The fourth proportional to 155,475.75, 214,560.67 and 87,495.15 is: 120,745.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,475.75 : 214,560.67 = 87,495.15 : x
  2. Step 2: Convert to fraction form
    155,475.75/214,560.67 = 87,495.15/x
  3. Step 3: Cross multiply
    155,475.75x = 214,560.67 × 87,495.15
  4. Step 4: Simplify right side
    155,475.75x = 18,773,018,005.75
  5. Step 5: Solve for x
    x = 18,773,018,005.75/155,475.75
  6. Step 6: Final answer
    x = 120,745.63

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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.