Home / 155,925.48-215,177.12-87,942.32

Finding the Fourth Proportional to 155,925.48, 215,177.12 and 87,942.32

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Solution

The fourth proportional to 155,925.48, 215,177.12 and 87,942.32 is: 121,360.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,925.48 : 215,177.12 = 87,942.32 : x
  2. Step 2: Convert to fraction form
    155,925.48/215,177.12 = 87,942.32/x
  3. Step 3: Cross multiply
    155,925.48x = 215,177.12 × 87,942.32
  4. Step 4: Simplify right side
    155,925.48x = 18,923,174,287.69
  5. Step 5: Solve for x
    x = 18,923,174,287.69/155,925.48
  6. Step 6: Final answer
    x = 121,360.37

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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.