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Finding the Fourth Proportional to 104,989.74, 144,885.71 and 57,243.08

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Solution

The fourth proportional to 104,989.74, 144,885.71 and 57,243.08 is: 78,995.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,989.74 : 144,885.71 = 57,243.08 : x
  2. Step 2: Convert to fraction form
    104,989.74/144,885.71 = 57,243.08/x
  3. Step 3: Cross multiply
    104,989.74x = 144,885.71 × 57,243.08
  4. Step 4: Simplify right side
    104,989.74x = 8,293,703,277.74
  5. Step 5: Solve for x
    x = 8,293,703,277.74/104,989.74
  6. Step 6: Final answer
    x = 78,995.37

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1.5x scale

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.