Home / 138,647.98-191,334.06-74,985.64

Finding the Fourth Proportional to 138,647.98, 191,334.06 and 74,985.64

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Solution

The fourth proportional to 138,647.98, 191,334.06 and 74,985.64 is: 103,480.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,647.98 : 191,334.06 = 74,985.64 : x
  2. Step 2: Convert to fraction form
    138,647.98/191,334.06 = 74,985.64/x
  3. Step 3: Cross multiply
    138,647.98x = 191,334.06 × 74,985.64
  4. Step 4: Simplify right side
    138,647.98x = 14,347,306,942.90
  5. Step 5: Solve for x
    x = 14,347,306,942.90/138,647.98
  6. Step 6: Final answer
    x = 103,480.10

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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.