Home / 138,575.21-191,233.85-74,913.02

Finding the Fourth Proportional to 138,575.21, 191,233.85 and 74,913.02

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Solution

The fourth proportional to 138,575.21, 191,233.85 and 74,913.02 is: 103,380.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,575.21 : 191,233.85 = 74,913.02 : x
  2. Step 2: Convert to fraction form
    138,575.21/191,233.85 = 74,913.02/x
  3. Step 3: Cross multiply
    138,575.21x = 191,233.85 × 74,913.02
  4. Step 4: Simplify right side
    138,575.21x = 14,325,904,616.12
  5. Step 5: Solve for x
    x = 14,325,904,616.12/138,575.21
  6. Step 6: Final answer
    x = 103,380.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.