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Finding the Fourth Proportional to 129,810.40, 194,693.52 and 36,294.40

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Solution

The fourth proportional to 129,810.40, 194,693.52 and 36,294.40 is: 54,435.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,810.40 : 194,693.52 = 36,294.40 : x
  2. Step 2: Convert to fraction form
    129,810.40/194,693.52 = 36,294.40/x
  3. Step 3: Cross multiply
    129,810.40x = 194,693.52 × 36,294.40
  4. Step 4: Simplify right side
    129,810.40x = 7,066,284,492.29
  5. Step 5: Solve for x
    x = 7,066,284,492.29/129,810.40
  6. Step 6: Final answer
    x = 54,435.43

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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.