Home / 139,319.24-192,262.77-78,888.24

Finding the Fourth Proportional to 139,319.24, 192,262.77 and 78,888.24

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Solution

The fourth proportional to 139,319.24, 192,262.77 and 78,888.24 is: 108,867.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,319.24 : 192,262.77 = 78,888.24 : x
  2. Step 2: Convert to fraction form
    139,319.24/192,262.77 = 78,888.24/x
  3. Step 3: Cross multiply
    139,319.24x = 192,262.77 × 78,888.24
  4. Step 4: Simplify right side
    139,319.24x = 15,167,271,542.82
  5. Step 5: Solve for x
    x = 15,167,271,542.82/139,319.24
  6. Step 6: Final answer
    x = 108,867.03

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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.