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Finding the Fourth Proportional to 190,490.76, 262,862.88 and 104,436

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Solution

The fourth proportional to 190,490.76, 262,862.88 and 104,436 is: 144,113.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,490.76 : 262,862.88 = 104,436 : x
  2. Step 2: Convert to fraction form
    190,490.76/262,862.88 = 104,436/x
  3. Step 3: Cross multiply
    190,490.76x = 262,862.88 × 104,436
  4. Step 4: Simplify right side
    190,490.76x = 27,452,347,735.68
  5. Step 5: Solve for x
    x = 27,452,347,735.68/190,490.76
  6. Step 6: Final answer
    x = 144,113.80

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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.