Home / 139,403.04-192,377.06-75,740.80

Finding the Fourth Proportional to 139,403.04, 192,377.06 and 75,740.80

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Solution

The fourth proportional to 139,403.04, 192,377.06 and 75,740.80 is: 104,522.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,403.04 : 192,377.06 = 75,740.80 : x
  2. Step 2: Convert to fraction form
    139,403.04/192,377.06 = 75,740.80/x
  3. Step 3: Cross multiply
    139,403.04x = 192,377.06 × 75,740.80
  4. Step 4: Simplify right side
    139,403.04x = 14,570,792,426.05
  5. Step 5: Solve for x
    x = 14,570,792,426.05/139,403.04
  6. Step 6: Final answer
    x = 104,522.77

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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.