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Finding the Fourth Proportional to 141,137.69, 194,501.53 and 138,543.92

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Solution

The fourth proportional to 141,137.69, 194,501.53 and 138,543.92 is: 190,927.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,137.69 : 194,501.53 = 138,543.92 : x
  2. Step 2: Convert to fraction form
    141,137.69/194,501.53 = 138,543.92/x
  3. Step 3: Cross multiply
    141,137.69x = 194,501.53 × 138,543.92
  4. Step 4: Simplify right side
    141,137.69x = 26,947,003,952.60
  5. Step 5: Solve for x
    x = 26,947,003,952.60/141,137.69
  6. Step 6: Final answer
    x = 190,927.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.