Home / 90,908.40-136,427.40-51,423.60

Finding the Fourth Proportional to 90,908.40, 136,427.40 and 51,423.60

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Solution

The fourth proportional to 90,908.40, 136,427.40 and 51,423.60 is: 77,172.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,908.40 : 136,427.40 = 51,423.60 : x
  2. Step 2: Convert to fraction form
    90,908.40/136,427.40 = 51,423.60/x
  3. Step 3: Cross multiply
    90,908.40x = 136,427.40 × 51,423.60
  4. Step 4: Simplify right side
    90,908.40x = 7,015,588,046.64
  5. Step 5: Solve for x
    x = 7,015,588,046.64/90,908.40
  6. Step 6: Final answer
    x = 77,172.06

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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.