Home / 190,211.12-262,416.48-122,217.92

Finding the Fourth Proportional to 190,211.12, 262,416.48 and 122,217.92

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Solution

The fourth proportional to 190,211.12, 262,416.48 and 122,217.92 is: 168,612.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,211.12 : 262,416.48 = 122,217.92 : x
  2. Step 2: Convert to fraction form
    190,211.12/262,416.48 = 122,217.92/x
  3. Step 3: Cross multiply
    190,211.12x = 262,416.48 × 122,217.92
  4. Step 4: Simplify right side
    190,211.12x = 32,071,996,359.32
  5. Step 5: Solve for x
    x = 32,071,996,359.32/190,211.12
  6. Step 6: Final answer
    x = 168,612.63

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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.