Home / 89,923.20-134,798.40-69,921.60

Finding the Fourth Proportional to 89,923.20, 134,798.40 and 69,921.60

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Solution

The fourth proportional to 89,923.20, 134,798.40 and 69,921.60 is: 104,815.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,923.20 : 134,798.40 = 69,921.60 : x
  2. Step 2: Convert to fraction form
    89,923.20/134,798.40 = 69,921.60/x
  3. Step 3: Cross multiply
    89,923.20x = 134,798.40 × 69,921.60
  4. Step 4: Simplify right side
    89,923.20x = 9,425,319,805.44
  5. Step 5: Solve for x
    x = 9,425,319,805.44/89,923.20
  6. Step 6: Final answer
    x = 104,815.22

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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.