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Finding the Fourth Proportional to 168,646.40, 253,261.20 and 89,914.40

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Solution

The fourth proportional to 168,646.40, 253,261.20 and 89,914.40 is: 135,027.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,646.40 : 253,261.20 = 89,914.40 : x
  2. Step 2: Convert to fraction form
    168,646.40/253,261.20 = 89,914.40/x
  3. Step 3: Cross multiply
    168,646.40x = 253,261.20 × 89,914.40
  4. Step 4: Simplify right side
    168,646.40x = 22,771,828,841.28
  5. Step 5: Solve for x
    x = 22,771,828,841.28/168,646.40
  6. Step 6: Final answer
    x = 135,027.07

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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.