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Finding the Fourth Proportional to 143,598.88, 198,264 and 89,905.60

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Solution

The fourth proportional to 143,598.88, 198,264 and 89,905.60 is: 124,130.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,598.88 : 198,264 = 89,905.60 : x
  2. Step 2: Convert to fraction form
    143,598.88/198,264 = 89,905.60/x
  3. Step 3: Cross multiply
    143,598.88x = 198,264 × 89,905.60
  4. Step 4: Simplify right side
    143,598.88x = 17,825,043,878.40
  5. Step 5: Solve for x
    x = 17,825,043,878.40/143,598.88
  6. Step 6: Final answer
    x = 124,130.80

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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.