Home / 189,869.04-262,105.20-121,984.56

Finding the Fourth Proportional to 189,869.04, 262,105.20 and 121,984.56

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Solution

The fourth proportional to 189,869.04, 262,105.20 and 121,984.56 is: 168,393.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,869.04 : 262,105.20 = 121,984.56 : x
  2. Step 2: Convert to fraction form
    189,869.04/262,105.20 = 121,984.56/x
  3. Step 3: Cross multiply
    189,869.04x = 262,105.20 × 121,984.56
  4. Step 4: Simplify right side
    189,869.04x = 31,972,787,495.71
  5. Step 5: Solve for x
    x = 31,972,787,495.71/189,869.04
  6. Step 6: Final answer
    x = 168,393.90

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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.