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Finding the Fourth Proportional to 139,290.52, 192,222.30 and 75,628.84

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Solution

The fourth proportional to 139,290.52, 192,222.30 and 75,628.84 is: 104,368.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,290.52 : 192,222.30 = 75,628.84 : x
  2. Step 2: Convert to fraction form
    139,290.52/192,222.30 = 75,628.84/x
  3. Step 3: Cross multiply
    139,290.52x = 192,222.30 × 75,628.84
  4. Step 4: Simplify right side
    139,290.52x = 14,537,549,571.13
  5. Step 5: Solve for x
    x = 14,537,549,571.13/139,290.52
  6. Step 6: Final answer
    x = 104,368.55

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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.