Home / 141,689.25-195,532.49-78,027.50

Finding the Fourth Proportional to 141,689.25, 195,532.49 and 78,027.50

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Solution

The fourth proportional to 141,689.25, 195,532.49 and 78,027.50 is: 107,678.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,689.25 : 195,532.49 = 78,027.50 : x
  2. Step 2: Convert to fraction form
    141,689.25/195,532.49 = 78,027.50/x
  3. Step 3: Cross multiply
    141,689.25x = 195,532.49 × 78,027.50
  4. Step 4: Simplify right side
    141,689.25x = 15,256,911,363.48
  5. Step 5: Solve for x
    x = 15,256,911,363.48/141,689.25
  6. Step 6: Final answer
    x = 107,678.68

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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.