Home / 98,914.91-136,427.26-85,140.69

Finding the Fourth Proportional to 98,914.91, 136,427.26 and 85,140.69

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Solution

The fourth proportional to 98,914.91, 136,427.26 and 85,140.69 is: 117,429.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,914.91 : 136,427.26 = 85,140.69 : x
  2. Step 2: Convert to fraction form
    98,914.91/136,427.26 = 85,140.69/x
  3. Step 3: Cross multiply
    98,914.91x = 136,427.26 × 85,140.69
  4. Step 4: Simplify right side
    98,914.91x = 11,615,510,725.85
  5. Step 5: Solve for x
    x = 11,615,510,725.85/98,914.91
  6. Step 6: Final answer
    x = 117,429.32

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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.