Home / 102,392.96-141,310.50-57,085.62

Finding the Fourth Proportional to 102,392.96, 141,310.50 and 57,085.62

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Solution

The fourth proportional to 102,392.96, 141,310.50 and 57,085.62 is: 78,782.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,392.96 : 141,310.50 = 57,085.62 : x
  2. Step 2: Convert to fraction form
    102,392.96/141,310.50 = 57,085.62/x
  3. Step 3: Cross multiply
    102,392.96x = 141,310.50 × 57,085.62
  4. Step 4: Simplify right side
    102,392.96x = 8,066,797,505.01
  5. Step 5: Solve for x
    x = 8,066,797,505.01/102,392.96
  6. Step 6: Final answer
    x = 78,782.74

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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.