Home / 98,145.86-135,445.44-55,708.34

Finding the Fourth Proportional to 98,145.86, 135,445.44 and 55,708.34

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Solution

The fourth proportional to 98,145.86, 135,445.44 and 55,708.34 is: 76,879.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,145.86 : 135,445.44 = 55,708.34 : x
  2. Step 2: Convert to fraction form
    98,145.86/135,445.44 = 55,708.34/x
  3. Step 3: Cross multiply
    98,145.86x = 135,445.44 × 55,708.34
  4. Step 4: Simplify right side
    98,145.86x = 7,545,440,622.97
  5. Step 5: Solve for x
    x = 7,545,440,622.97/98,145.86
  6. Step 6: Final answer
    x = 76,879.87

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1.5x scale

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.