Home / 141,856.68-195,762.78-78,194.46

Finding the Fourth Proportional to 141,856.68, 195,762.78 and 78,194.46

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Solution

The fourth proportional to 141,856.68, 195,762.78 and 78,194.46 is: 107,908.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,856.68 : 195,762.78 = 78,194.46 : x
  2. Step 2: Convert to fraction form
    141,856.68/195,762.78 = 78,194.46/x
  3. Step 3: Cross multiply
    141,856.68x = 195,762.78 × 78,194.46
  4. Step 4: Simplify right side
    141,856.68x = 15,307,564,870.20
  5. Step 5: Solve for x
    x = 15,307,564,870.20/141,856.68
  6. Step 6: Final answer
    x = 107,908.66

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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.