Home / 191,715.48-287,465.44-131,814.36

Finding the Fourth Proportional to 191,715.48, 287,465.44 and 131,814.36

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Solution

The fourth proportional to 191,715.48, 287,465.44 and 131,814.36 is: 197,647.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,715.48 : 287,465.44 = 131,814.36 : x
  2. Step 2: Convert to fraction form
    191,715.48/287,465.44 = 131,814.36/x
  3. Step 3: Cross multiply
    191,715.48x = 287,465.44 × 131,814.36
  4. Step 4: Simplify right side
    191,715.48x = 37,892,072,995.72
  5. Step 5: Solve for x
    x = 37,892,072,995.72/191,715.48
  6. Step 6: Final answer
    x = 197,647.44

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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.