Home / 191,129.40-263,735.64-105,074.20

Finding the Fourth Proportional to 191,129.40, 263,735.64 and 105,074.20

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Solution

The fourth proportional to 191,129.40, 263,735.64 and 105,074.20 is: 144,989.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,129.40 : 263,735.64 = 105,074.20 : x
  2. Step 2: Convert to fraction form
    191,129.40/263,735.64 = 105,074.20/x
  3. Step 3: Cross multiply
    191,129.40x = 263,735.64 × 105,074.20
  4. Step 4: Simplify right side
    191,129.40x = 27,711,811,384.49
  5. Step 5: Solve for x
    x = 27,711,811,384.49/191,129.40
  6. Step 6: Final answer
    x = 144,989.79

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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.