Home / 90,681.78-136,018.34-27,499.08

Finding the Fourth Proportional to 90,681.78, 136,018.34 and 27,499.08

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Solution

The fourth proportional to 90,681.78, 136,018.34 and 27,499.08 is: 41,247.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,681.78 : 136,018.34 = 27,499.08 : x
  2. Step 2: Convert to fraction form
    90,681.78/136,018.34 = 27,499.08/x
  3. Step 3: Cross multiply
    90,681.78x = 136,018.34 × 27,499.08
  4. Step 4: Simplify right side
    90,681.78x = 3,740,379,213.13
  5. Step 5: Solve for x
    x = 3,740,379,213.13/90,681.78
  6. Step 6: Final answer
    x = 41,247.31

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1.5x scale

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.