Home / 139,605.12-192,668.40-85,925.52

Finding the Fourth Proportional to 139,605.12, 192,668.40 and 85,925.52

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Solution

The fourth proportional to 139,605.12, 192,668.40 and 85,925.52 is: 118,585.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,605.12 : 192,668.40 = 85,925.52 : x
  2. Step 2: Convert to fraction form
    139,605.12/192,668.40 = 85,925.52/x
  3. Step 3: Cross multiply
    139,605.12x = 192,668.40 × 85,925.52
  4. Step 4: Simplify right side
    139,605.12x = 16,555,132,457.57
  5. Step 5: Solve for x
    x = 16,555,132,457.57/139,605.12
  6. Step 6: Final answer
    x = 118,585.42

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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.