Home / 139,781.84-192,907.04-105,264.80

Finding the Fourth Proportional to 139,781.84, 192,907.04 and 105,264.80

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Solution

The fourth proportional to 139,781.84, 192,907.04 and 105,264.80 is: 145,271.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,781.84 : 192,907.04 = 105,264.80 : x
  2. Step 2: Convert to fraction form
    139,781.84/192,907.04 = 105,264.80/x
  3. Step 3: Cross multiply
    139,781.84x = 192,907.04 × 105,264.80
  4. Step 4: Simplify right side
    139,781.84x = 20,306,320,216.73
  5. Step 5: Solve for x
    x = 20,306,320,216.73/139,781.84
  6. Step 6: Final answer
    x = 145,271.52

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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.