Home / 208,013.40-311,904.90-89,664.60

Finding the Fourth Proportional to 208,013.40, 311,904.90 and 89,664.60

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Solution

The fourth proportional to 208,013.40, 311,904.90 and 89,664.60 is: 134,447.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,013.40 : 311,904.90 = 89,664.60 : x
  2. Step 2: Convert to fraction form
    208,013.40/311,904.90 = 89,664.60/x
  3. Step 3: Cross multiply
    208,013.40x = 311,904.90 × 89,664.60
  4. Step 4: Simplify right side
    208,013.40x = 27,966,828,096.54
  5. Step 5: Solve for x
    x = 27,966,828,096.54/208,013.40
  6. Step 6: Final answer
    x = 134,447.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.