Home / 90,668.16-136,025.31-53,259.87

Finding the Fourth Proportional to 90,668.16, 136,025.31 and 53,259.87

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Solution

The fourth proportional to 90,668.16, 136,025.31 and 53,259.87 is: 79,903.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,668.16 : 136,025.31 = 53,259.87 : x
  2. Step 2: Convert to fraction form
    90,668.16/136,025.31 = 53,259.87/x
  3. Step 3: Cross multiply
    90,668.16x = 136,025.31 × 53,259.87
  4. Step 4: Simplify right side
    90,668.16x = 7,244,690,327.31
  5. Step 5: Solve for x
    x = 7,244,690,327.31/90,668.16
  6. Step 6: Final answer
    x = 79,903.36

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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.