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Finding the Fourth Proportional to 141,605.40, 212,408.10 and 135,538.20

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Solution

The fourth proportional to 141,605.40, 212,408.10 and 135,538.20 is: 203,307.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,605.40 : 212,408.10 = 135,538.20 : x
  2. Step 2: Convert to fraction form
    141,605.40/212,408.10 = 135,538.20/x
  3. Step 3: Cross multiply
    141,605.40x = 212,408.10 × 135,538.20
  4. Step 4: Simplify right side
    141,605.40x = 28,789,411,539.42
  5. Step 5: Solve for x
    x = 28,789,411,539.42/141,605.40
  6. Step 6: Final answer
    x = 203,307.30

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1.5x scale

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.