Home / 409,420.98-614,242.04-125,103.78

Finding the Fourth Proportional to 409,420.98, 614,242.04 and 125,103.78

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Solution

The fourth proportional to 409,420.98, 614,242.04 and 125,103.78 is: 187,689.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,420.98 : 614,242.04 = 125,103.78 : x
  2. Step 2: Convert to fraction form
    409,420.98/614,242.04 = 125,103.78/x
  3. Step 3: Cross multiply
    409,420.98x = 614,242.04 × 125,103.78
  4. Step 4: Simplify right side
    409,420.98x = 76,844,000,413.39
  5. Step 5: Solve for x
    x = 76,844,000,413.39/409,420.98
  6. Step 6: Final answer
    x = 187,689.45

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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.