Home / 189,680.12-284,274.89-141,920.49

Finding the Fourth Proportional to 189,680.12, 284,274.89 and 141,920.49

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Solution

The fourth proportional to 189,680.12, 284,274.89 and 141,920.49 is: 212,697.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,680.12 : 284,274.89 = 141,920.49 : x
  2. Step 2: Convert to fraction form
    189,680.12/284,274.89 = 141,920.49/x
  3. Step 3: Cross multiply
    189,680.12x = 284,274.89 × 141,920.49
  4. Step 4: Simplify right side
    189,680.12x = 40,344,430,973.89
  5. Step 5: Solve for x
    x = 40,344,430,973.89/189,680.12
  6. Step 6: Final answer
    x = 212,697.21

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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.