Home / 189,685.08-284,308.74-71,280.72

Finding the Fourth Proportional to 189,685.08, 284,308.74 and 71,280.72

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Solution

The fourth proportional to 189,685.08, 284,308.74 and 71,280.72 is: 106,838.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,685.08 : 284,308.74 = 71,280.72 : x
  2. Step 2: Convert to fraction form
    189,685.08/284,308.74 = 71,280.72/x
  3. Step 3: Cross multiply
    189,685.08x = 284,308.74 × 71,280.72
  4. Step 4: Simplify right side
    189,685.08x = 20,265,731,689.49
  5. Step 5: Solve for x
    x = 20,265,731,689.49/189,685.08
  6. Step 6: Final answer
    x = 106,838.83

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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.