Home / 141,420.80-212,131.20-135,977.60

Finding the Fourth Proportional to 141,420.80, 212,131.20 and 135,977.60

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Solution

The fourth proportional to 141,420.80, 212,131.20 and 135,977.60 is: 203,966.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,420.80 : 212,131.20 = 135,977.60 : x
  2. Step 2: Convert to fraction form
    141,420.80/212,131.20 = 135,977.60/x
  3. Step 3: Cross multiply
    141,420.80x = 212,131.20 × 135,977.60
  4. Step 4: Simplify right side
    141,420.80x = 28,845,091,461.12
  5. Step 5: Solve for x
    x = 28,845,091,461.12/141,420.80
  6. Step 6: Final answer
    x = 203,966.40

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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.