Home / 139,999.54-193,200.24-76,338.40

Finding the Fourth Proportional to 139,999.54, 193,200.24 and 76,338.40

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Solution

The fourth proportional to 139,999.54, 193,200.24 and 76,338.40 is: 105,347.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,999.54 : 193,200.24 = 76,338.40 : x
  2. Step 2: Convert to fraction form
    139,999.54/193,200.24 = 76,338.40/x
  3. Step 3: Cross multiply
    139,999.54x = 193,200.24 × 76,338.40
  4. Step 4: Simplify right side
    139,999.54x = 14,748,597,201.22
  5. Step 5: Solve for x
    x = 14,748,597,201.22/139,999.54
  6. Step 6: Final answer
    x = 105,347.47

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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.