Home / 122,213.16-183,494.70-90,720.36

Finding the Fourth Proportional to 122,213.16, 183,494.70 and 90,720.36

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Solution

The fourth proportional to 122,213.16, 183,494.70 and 90,720.36 is: 136,210.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,213.16 : 183,494.70 = 90,720.36 : x
  2. Step 2: Convert to fraction form
    122,213.16/183,494.70 = 90,720.36/x
  3. Step 3: Cross multiply
    122,213.16x = 183,494.70 × 90,720.36
  4. Step 4: Simplify right side
    122,213.16x = 16,646,705,242.09
  5. Step 5: Solve for x
    x = 16,646,705,242.09/122,213.16
  6. Step 6: Final answer
    x = 136,210.42

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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.