Home / 138,025.62-190,396.89-86,950.26

Finding the Fourth Proportional to 138,025.62, 190,396.89 and 86,950.26

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Solution

The fourth proportional to 138,025.62, 190,396.89 and 86,950.26 is: 119,941.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,025.62 : 190,396.89 = 86,950.26 : x
  2. Step 2: Convert to fraction form
    138,025.62/190,396.89 = 86,950.26/x
  3. Step 3: Cross multiply
    138,025.62x = 190,396.89 × 86,950.26
  4. Step 4: Simplify right side
    138,025.62x = 16,555,059,088.69
  5. Step 5: Solve for x
    x = 16,555,059,088.69/138,025.62
  6. Step 6: Final answer
    x = 119,941.93

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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.