Home / 90,886.24-136,261.32-61,220.80

Finding the Fourth Proportional to 90,886.24, 136,261.32 and 61,220.80

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Solution

The fourth proportional to 90,886.24, 136,261.32 and 61,220.80 is: 91,785.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,886.24 : 136,261.32 = 61,220.80 : x
  2. Step 2: Convert to fraction form
    90,886.24/136,261.32 = 61,220.80/x
  3. Step 3: Cross multiply
    90,886.24x = 136,261.32 × 61,220.80
  4. Step 4: Simplify right side
    90,886.24x = 8,342,027,019.46
  5. Step 5: Solve for x
    x = 8,342,027,019.46/90,886.24
  6. Step 6: Final answer
    x = 91,785.37

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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.