Home / 98,150.17-135,451.31-55,712.65

Finding the Fourth Proportional to 98,150.17, 135,451.31 and 55,712.65

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Solution

The fourth proportional to 98,150.17, 135,451.31 and 55,712.65 is: 76,885.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,150.17 : 135,451.31 = 55,712.65 : x
  2. Step 2: Convert to fraction form
    98,150.17/135,451.31 = 55,712.65/x
  3. Step 3: Cross multiply
    98,150.17x = 135,451.31 × 55,712.65
  4. Step 4: Simplify right side
    98,150.17x = 7,546,351,147.51
  5. Step 5: Solve for x
    x = 7,546,351,147.51/98,150.17
  6. Step 6: Final answer
    x = 76,885.77

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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.