Home / 136,036.26-203,715-85,965.30

Finding the Fourth Proportional to 136,036.26, 203,715 and 85,965.30

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Solution

The fourth proportional to 136,036.26, 203,715 and 85,965.30 is: 128,733.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,036.26 : 203,715 = 85,965.30 : x
  2. Step 2: Convert to fraction form
    136,036.26/203,715 = 85,965.30/x
  3. Step 3: Cross multiply
    136,036.26x = 203,715 × 85,965.30
  4. Step 4: Simplify right side
    136,036.26x = 17,512,421,089.50
  5. Step 5: Solve for x
    x = 17,512,421,089.50/136,036.26
  6. Step 6: Final answer
    x = 128,733.48

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1.5x scale

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.