Home / 155,345.69-214,374.99-87,362.64

Finding the Fourth Proportional to 155,345.69, 214,374.99 and 87,362.64

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Solution

The fourth proportional to 155,345.69, 214,374.99 and 87,362.64 is: 120,559.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,345.69 : 214,374.99 = 87,362.64 : x
  2. Step 2: Convert to fraction form
    155,345.69/214,374.99 = 87,362.64/x
  3. Step 3: Cross multiply
    155,345.69x = 214,374.99 × 87,362.64
  4. Step 4: Simplify right side
    155,345.69x = 18,728,365,076.37
  5. Step 5: Solve for x
    x = 18,728,365,076.37/155,345.69
  6. Step 6: Final answer
    x = 120,559.28

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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.