Home / 90,199.89-135,312.80-27,875.25

Finding the Fourth Proportional to 90,199.89, 135,312.80 and 27,875.25

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Solution

The fourth proportional to 90,199.89, 135,312.80 and 27,875.25 is: 41,816.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,199.89 : 135,312.80 = 27,875.25 : x
  2. Step 2: Convert to fraction form
    90,199.89/135,312.80 = 27,875.25/x
  3. Step 3: Cross multiply
    90,199.89x = 135,312.80 × 27,875.25
  4. Step 4: Simplify right side
    90,199.89x = 3,771,878,128.20
  5. Step 5: Solve for x
    x = 3,771,878,128.20/90,199.89
  6. Step 6: Final answer
    x = 41,816.88

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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.