Home / 102,131.46-140,933.52-56,806.92

Finding the Fourth Proportional to 102,131.46, 140,933.52 and 56,806.92

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Solution

The fourth proportional to 102,131.46, 140,933.52 and 56,806.92 is: 78,389.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,131.46 : 140,933.52 = 56,806.92 : x
  2. Step 2: Convert to fraction form
    102,131.46/140,933.52 = 56,806.92/x
  3. Step 3: Cross multiply
    102,131.46x = 140,933.52 × 56,806.92
  4. Step 4: Simplify right side
    102,131.46x = 8,005,999,195.96
  5. Step 5: Solve for x
    x = 8,005,999,195.96/102,131.46
  6. Step 6: Final answer
    x = 78,389.16

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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.