Home / 141,898.78-195,829.14-78,236.47

Finding the Fourth Proportional to 141,898.78, 195,829.14 and 78,236.47

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Solution

The fourth proportional to 141,898.78, 195,829.14 and 78,236.47 is: 107,971.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,898.78 : 195,829.14 = 78,236.47 : x
  2. Step 2: Convert to fraction form
    141,898.78/195,829.14 = 78,236.47/x
  3. Step 3: Cross multiply
    141,898.78x = 195,829.14 × 78,236.47
  4. Step 4: Simplify right side
    141,898.78x = 15,320,980,636.74
  5. Step 5: Solve for x
    x = 15,320,980,636.74/141,898.78
  6. Step 6: Final answer
    x = 107,971.19

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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.