Home / 189,849.60-261,880.32-118,241.28

Finding the Fourth Proportional to 189,849.60, 261,880.32 and 118,241.28

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Solution

The fourth proportional to 189,849.60, 261,880.32 and 118,241.28 is: 163,103.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,849.60 : 261,880.32 = 118,241.28 : x
  2. Step 2: Convert to fraction form
    189,849.60/261,880.32 = 118,241.28/x
  3. Step 3: Cross multiply
    189,849.60x = 261,880.32 × 118,241.28
  4. Step 4: Simplify right side
    189,849.60x = 30,965,064,243.61
  5. Step 5: Solve for x
    x = 30,965,064,243.61/189,849.60
  6. Step 6: Final answer
    x = 163,103.13

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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.