Home / 138,644.21-191,329.14-74,982.01

Finding the Fourth Proportional to 138,644.21, 191,329.14 and 74,982.01

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Solution

The fourth proportional to 138,644.21, 191,329.14 and 74,982.01 is: 103,475.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,644.21 : 191,329.14 = 74,982.01 : x
  2. Step 2: Convert to fraction form
    138,644.21/191,329.14 = 74,982.01/x
  3. Step 3: Cross multiply
    138,644.21x = 191,329.14 × 74,982.01
  4. Step 4: Simplify right side
    138,644.21x = 14,346,242,583.83
  5. Step 5: Solve for x
    x = 14,346,242,583.83/138,644.21
  6. Step 6: Final answer
    x = 103,475.24

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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.