Home / 198,320.78-273,688.80-113,465.18

Finding the Fourth Proportional to 198,320.78, 273,688.80 and 113,465.18

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Solution

The fourth proportional to 198,320.78, 273,688.80 and 113,465.18 is: 156,585.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,320.78 : 273,688.80 = 113,465.18 : x
  2. Step 2: Convert to fraction form
    198,320.78/273,688.80 = 113,465.18/x
  3. Step 3: Cross multiply
    198,320.78x = 273,688.80 × 113,465.18
  4. Step 4: Simplify right side
    198,320.78x = 31,054,148,955.98
  5. Step 5: Solve for x
    x = 31,054,148,955.98/198,320.78
  6. Step 6: Final answer
    x = 156,585.45

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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.