Home / 139,782.32-192,907.70-105,265.25

Finding the Fourth Proportional to 139,782.32, 192,907.70 and 105,265.25

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Solution

The fourth proportional to 139,782.32, 192,907.70 and 105,265.25 is: 145,272.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,782.32 : 192,907.70 = 105,265.25 : x
  2. Step 2: Convert to fraction form
    139,782.32/192,907.70 = 105,265.25/x
  3. Step 3: Cross multiply
    139,782.32x = 192,907.70 × 105,265.25
  4. Step 4: Simplify right side
    139,782.32x = 20,306,475,776.56
  5. Step 5: Solve for x
    x = 20,306,475,776.56/139,782.32
  6. Step 6: Final answer
    x = 145,272.14

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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.