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Finding the Fourth Proportional to 101,558.40, 152,030.40 and 90,499.20

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Solution

The fourth proportional to 101,558.40, 152,030.40 and 90,499.20 is: 135,475.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,558.40 : 152,030.40 = 90,499.20 : x
  2. Step 2: Convert to fraction form
    101,558.40/152,030.40 = 90,499.20/x
  3. Step 3: Cross multiply
    101,558.40x = 152,030.40 × 90,499.20
  4. Step 4: Simplify right side
    101,558.40x = 13,758,629,575.68
  5. Step 5: Solve for x
    x = 13,758,629,575.68/101,558.40
  6. Step 6: Final answer
    x = 135,475.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.