Home / 107,940.47-149,018.73-74,848.43

Finding the Fourth Proportional to 107,940.47, 149,018.73 and 74,848.43

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Solution

The fourth proportional to 107,940.47, 149,018.73 and 74,848.43 is: 103,333.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,940.47 : 149,018.73 = 74,848.43 : x
  2. Step 2: Convert to fraction form
    107,940.47/149,018.73 = 74,848.43/x
  3. Step 3: Cross multiply
    107,940.47x = 149,018.73 × 74,848.43
  4. Step 4: Simplify right side
    107,940.47x = 11,153,817,981.09
  5. Step 5: Solve for x
    x = 11,153,817,981.09/107,940.47
  6. Step 6: Final answer
    x = 103,333.05

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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.