Home / 138,090.84-207,118.98-55,043.16

Finding the Fourth Proportional to 138,090.84, 207,118.98 and 55,043.16

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Solution

The fourth proportional to 138,090.84, 207,118.98 and 55,043.16 is: 82,557.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,090.84 : 207,118.98 = 55,043.16 : x
  2. Step 2: Convert to fraction form
    138,090.84/207,118.98 = 55,043.16/x
  3. Step 3: Cross multiply
    138,090.84x = 207,118.98 × 55,043.16
  4. Step 4: Simplify right side
    138,090.84x = 11,400,483,155.18
  5. Step 5: Solve for x
    x = 11,400,483,155.18/138,090.84
  6. Step 6: Final answer
    x = 82,557.85

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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.