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Finding the Fourth Proportional to 104,649.84, 144,172.71 and 72,763.38

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Solution

The fourth proportional to 104,649.84, 144,172.71 and 72,763.38 is: 100,243.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,649.84 : 144,172.71 = 72,763.38 : x
  2. Step 2: Convert to fraction form
    104,649.84/144,172.71 = 72,763.38/x
  3. Step 3: Cross multiply
    104,649.84x = 144,172.71 × 72,763.38
  4. Step 4: Simplify right side
    104,649.84x = 10,490,493,683.36
  5. Step 5: Solve for x
    x = 10,490,493,683.36/104,649.84
  6. Step 6: Final answer
    x = 100,243.76

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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.