Home / 191,178.89-286,600.66-72,771.47

Finding the Fourth Proportional to 191,178.89, 286,600.66 and 72,771.47

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Solution

The fourth proportional to 191,178.89, 286,600.66 and 72,771.47 is: 109,093.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,178.89 : 286,600.66 = 72,771.47 : x
  2. Step 2: Convert to fraction form
    191,178.89/286,600.66 = 72,771.47/x
  3. Step 3: Cross multiply
    191,178.89x = 286,600.66 × 72,771.47
  4. Step 4: Simplify right side
    191,178.89x = 20,856,349,716.24
  5. Step 5: Solve for x
    x = 20,856,349,716.24/191,178.89
  6. Step 6: Final answer
    x = 109,093.37

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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.