Home / 139,779.14-192,897.45-76,116.92

Finding the Fourth Proportional to 139,779.14, 192,897.45 and 76,116.92

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Solution

The fourth proportional to 139,779.14, 192,897.45 and 76,116.92 is: 105,042.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,779.14 : 192,897.45 = 76,116.92 : x
  2. Step 2: Convert to fraction form
    139,779.14/192,897.45 = 76,116.92/x
  3. Step 3: Cross multiply
    139,779.14x = 192,897.45 × 76,116.92
  4. Step 4: Simplify right side
    139,779.14x = 14,682,758,805.37
  5. Step 5: Solve for x
    x = 14,682,758,805.37/139,779.14
  6. Step 6: Final answer
    x = 105,042.56

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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.