Home / 99,985.08-149,977.78-40,040.55

Finding the Fourth Proportional to 99,985.08, 149,977.78 and 40,040.55

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Solution

The fourth proportional to 99,985.08, 149,977.78 and 40,040.55 is: 60,060.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,985.08 : 149,977.78 = 40,040.55 : x
  2. Step 2: Convert to fraction form
    99,985.08/149,977.78 = 40,040.55/x
  3. Step 3: Cross multiply
    99,985.08x = 149,977.78 × 40,040.55
  4. Step 4: Simplify right side
    99,985.08x = 6,005,193,120.69
  5. Step 5: Solve for x
    x = 6,005,193,120.69/99,985.08
  6. Step 6: Final answer
    x = 60,060.89

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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.