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Finding the Fourth Proportional to 145,837.60, 218,410.80 and 89,850.40

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Solution

The fourth proportional to 145,837.60, 218,410.80 and 89,850.40 is: 134,562.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,837.60 : 218,410.80 = 89,850.40 : x
  2. Step 2: Convert to fraction form
    145,837.60/218,410.80 = 89,850.40/x
  3. Step 3: Cross multiply
    145,837.60x = 218,410.80 × 89,850.40
  4. Step 4: Simplify right side
    145,837.60x = 19,624,297,744.32
  5. Step 5: Solve for x
    x = 19,624,297,744.32/145,837.60
  6. Step 6: Final answer
    x = 134,562.68

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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.