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Finding the Fourth Proportional to 145,687.44, 201,036.42 and 89,087.88

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Solution

The fourth proportional to 145,687.44, 201,036.42 and 89,087.88 is: 122,933.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,687.44 : 201,036.42 = 89,087.88 : x
  2. Step 2: Convert to fraction form
    145,687.44/201,036.42 = 89,087.88/x
  3. Step 3: Cross multiply
    145,687.44x = 201,036.42 × 89,087.88
  4. Step 4: Simplify right side
    145,687.44x = 17,909,908,460.59
  5. Step 5: Solve for x
    x = 17,909,908,460.59/145,687.44
  6. Step 6: Final answer
    x = 122,933.79

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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.