Home / 136,437.79-188,287.89-85,445.75

Finding the Fourth Proportional to 136,437.79, 188,287.89 and 85,445.75

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Solution

The fourth proportional to 136,437.79, 188,287.89 and 85,445.75 is: 117,917.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,437.79 : 188,287.89 = 85,445.75 : x
  2. Step 2: Convert to fraction form
    136,437.79/188,287.89 = 85,445.75/x
  3. Step 3: Cross multiply
    136,437.79x = 188,287.89 × 85,445.75
  4. Step 4: Simplify right side
    136,437.79x = 16,088,399,272.85
  5. Step 5: Solve for x
    x = 16,088,399,272.85/136,437.79
  6. Step 6: Final answer
    x = 117,917.47

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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.