Home / 157,719.09-217,649.32-86,099.61

Finding the Fourth Proportional to 157,719.09, 217,649.32 and 86,099.61

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Solution

The fourth proportional to 157,719.09, 217,649.32 and 86,099.61 is: 118,815.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,719.09 : 217,649.32 = 86,099.61 : x
  2. Step 2: Convert to fraction form
    157,719.09/217,649.32 = 86,099.61/x
  3. Step 3: Cross multiply
    157,719.09x = 217,649.32 × 86,099.61
  4. Step 4: Simplify right side
    157,719.09x = 18,739,521,568.77
  5. Step 5: Solve for x
    x = 18,739,521,568.77/157,719.09
  6. Step 6: Final answer
    x = 118,815.81

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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.