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Finding the Fourth Proportional to 141,606.40, 212,409.60 and 135,539.20

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Solution

The fourth proportional to 141,606.40, 212,409.60 and 135,539.20 is: 203,308.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,606.40 : 212,409.60 = 135,539.20 : x
  2. Step 2: Convert to fraction form
    141,606.40/212,409.60 = 135,539.20/x
  3. Step 3: Cross multiply
    141,606.40x = 212,409.60 × 135,539.20
  4. Step 4: Simplify right side
    141,606.40x = 28,789,827,256.32
  5. Step 5: Solve for x
    x = 28,789,827,256.32/141,606.40
  6. Step 6: Final answer
    x = 203,308.80

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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.