Home / 189,729.96-261,795.78-113,280

Finding the Fourth Proportional to 189,729.96, 261,795.78 and 113,280

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Solution

The fourth proportional to 189,729.96, 261,795.78 and 113,280 is: 156,307.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,729.96 : 261,795.78 = 113,280 : x
  2. Step 2: Convert to fraction form
    189,729.96/261,795.78 = 113,280/x
  3. Step 3: Cross multiply
    189,729.96x = 261,795.78 × 113,280
  4. Step 4: Simplify right side
    189,729.96x = 29,656,225,958.40
  5. Step 5: Solve for x
    x = 29,656,225,958.40/189,729.96
  6. Step 6: Final answer
    x = 156,307.55

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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.