Home / 133,040.40-199,330.20-86,269.20

Finding the Fourth Proportional to 133,040.40, 199,330.20 and 86,269.20

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Solution

The fourth proportional to 133,040.40, 199,330.20 and 86,269.20 is: 129,254.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,040.40 : 199,330.20 = 86,269.20 : x
  2. Step 2: Convert to fraction form
    133,040.40/199,330.20 = 86,269.20/x
  3. Step 3: Cross multiply
    133,040.40x = 199,330.20 × 86,269.20
  4. Step 4: Simplify right side
    133,040.40x = 17,196,056,889.84
  5. Step 5: Solve for x
    x = 17,196,056,889.84/133,040.40
  6. Step 6: Final answer
    x = 129,254.40

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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.