Home / 151,389.48-208,917.54-87,764.16

Finding the Fourth Proportional to 151,389.48, 208,917.54 and 87,764.16

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Solution

The fourth proportional to 151,389.48, 208,917.54 and 87,764.16 is: 121,114.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,389.48 : 208,917.54 = 87,764.16 : x
  2. Step 2: Convert to fraction form
    151,389.48/208,917.54 = 87,764.16/x
  3. Step 3: Cross multiply
    151,389.48x = 208,917.54 × 87,764.16
  4. Step 4: Simplify right side
    151,389.48x = 18,335,472,407.37
  5. Step 5: Solve for x
    x = 18,335,472,407.37/151,389.48
  6. Step 6: Final answer
    x = 121,114.57

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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.