Home / 103,681.78-155,334.03-72,024.96

Finding the Fourth Proportional to 103,681.78, 155,334.03 and 72,024.96

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Solution

The fourth proportional to 103,681.78, 155,334.03 and 72,024.96 is: 107,906.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,681.78 : 155,334.03 = 72,024.96 : x
  2. Step 2: Convert to fraction form
    103,681.78/155,334.03 = 72,024.96/x
  3. Step 3: Cross multiply
    103,681.78x = 155,334.03 × 72,024.96
  4. Step 4: Simplify right side
    103,681.78x = 11,187,927,297.39
  5. Step 5: Solve for x
    x = 11,187,927,297.39/103,681.78
  6. Step 6: Final answer
    x = 107,906.40

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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.