Home / 139,544.19-192,587.22-78,307.25

Finding the Fourth Proportional to 139,544.19, 192,587.22 and 78,307.25

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Solution

The fourth proportional to 139,544.19, 192,587.22 and 78,307.25 is: 108,073.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,544.19 : 192,587.22 = 78,307.25 : x
  2. Step 2: Convert to fraction form
    139,544.19/192,587.22 = 78,307.25/x
  3. Step 3: Cross multiply
    139,544.19x = 192,587.22 × 78,307.25
  4. Step 4: Simplify right side
    139,544.19x = 15,080,974,620.41
  5. Step 5: Solve for x
    x = 15,080,974,620.41/139,544.19
  6. Step 6: Final answer
    x = 108,073.11

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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.