Home / 102,188.81-141,180.55-78,074.19

Finding the Fourth Proportional to 102,188.81, 141,180.55 and 78,074.19

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Solution

The fourth proportional to 102,188.81, 141,180.55 and 78,074.19 is: 107,864.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,188.81 : 141,180.55 = 78,074.19 : x
  2. Step 2: Convert to fraction form
    102,188.81/141,180.55 = 78,074.19/x
  3. Step 3: Cross multiply
    102,188.81x = 141,180.55 × 78,074.19
  4. Step 4: Simplify right side
    102,188.81x = 11,022,556,992.29
  5. Step 5: Solve for x
    x = 11,022,556,992.29/102,188.81
  6. Step 6: Final answer
    x = 107,864.61

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1.5x scale

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.