Home / 138,435.01-191,040.45-74,772.81

Finding the Fourth Proportional to 138,435.01, 191,040.45 and 74,772.81

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Solution

The fourth proportional to 138,435.01, 191,040.45 and 74,772.81 is: 103,186.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,435.01 : 191,040.45 = 74,772.81 : x
  2. Step 2: Convert to fraction form
    138,435.01/191,040.45 = 74,772.81/x
  3. Step 3: Cross multiply
    138,435.01x = 191,040.45 × 74,772.81
  4. Step 4: Simplify right side
    138,435.01x = 14,284,630,034.56
  5. Step 5: Solve for x
    x = 14,284,630,034.56/138,435.01
  6. Step 6: Final answer
    x = 103,186.54

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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.