Home / 258,056.06-387,129.48-117,828.86

Finding the Fourth Proportional to 258,056.06, 387,129.48 and 117,828.86

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Solution

The fourth proportional to 258,056.06, 387,129.48 and 117,828.86 is: 176,764.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,056.06 : 387,129.48 = 117,828.86 : x
  2. Step 2: Convert to fraction form
    258,056.06/387,129.48 = 117,828.86/x
  3. Step 3: Cross multiply
    258,056.06x = 387,129.48 × 117,828.86
  4. Step 4: Simplify right side
    258,056.06x = 45,615,025,300.79
  5. Step 5: Solve for x
    x = 45,615,025,300.79/258,056.06
  6. Step 6: Final answer
    x = 176,764.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.