Home / 102,416.92-141,255.23-66,618.36

Finding the Fourth Proportional to 102,416.92, 141,255.23 and 66,618.36

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Solution

The fourth proportional to 102,416.92, 141,255.23 and 66,618.36 is: 91,881.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,416.92 : 141,255.23 = 66,618.36 : x
  2. Step 2: Convert to fraction form
    102,416.92/141,255.23 = 66,618.36/x
  3. Step 3: Cross multiply
    102,416.92x = 141,255.23 × 66,618.36
  4. Step 4: Simplify right side
    102,416.92x = 9,410,191,430.93
  5. Step 5: Solve for x
    x = 9,410,191,430.93/102,416.92
  6. Step 6: Final answer
    x = 91,881.22

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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.