Home / 139,211.06-192,111.40-75,548.86

Finding the Fourth Proportional to 139,211.06, 192,111.40 and 75,548.86

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Solution

The fourth proportional to 139,211.06, 192,111.40 and 75,548.86 is: 104,257.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,211.06 : 192,111.40 = 75,548.86 : x
  2. Step 2: Convert to fraction form
    139,211.06/192,111.40 = 75,548.86/x
  3. Step 3: Cross multiply
    139,211.06x = 192,111.40 × 75,548.86
  4. Step 4: Simplify right side
    139,211.06x = 14,513,797,263.00
  5. Step 5: Solve for x
    x = 14,513,797,263.00/139,211.06
  6. Step 6: Final answer
    x = 104,257.50

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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.