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Finding the Fourth Proportional to 139,290.58, 192,221.25 and 75,628.18

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Solution

The fourth proportional to 139,290.58, 192,221.25 and 75,628.18 is: 104,367.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,290.58 : 192,221.25 = 75,628.18 : x
  2. Step 2: Convert to fraction form
    139,290.58/192,221.25 = 75,628.18/x
  3. Step 3: Cross multiply
    139,290.58x = 192,221.25 × 75,628.18
  4. Step 4: Simplify right side
    139,290.58x = 14,537,343,294.83
  5. Step 5: Solve for x
    x = 14,537,343,294.83/139,290.58
  6. Step 6: Final answer
    x = 104,367.02

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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.