Home / 133,538.90-199,353.93-128,866.24

Finding the Fourth Proportional to 133,538.90, 199,353.93 and 128,866.24

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Solution

The fourth proportional to 133,538.90, 199,353.93 and 128,866.24 is: 192,378.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,538.90 : 199,353.93 = 128,866.24 : x
  2. Step 2: Convert to fraction form
    133,538.90/199,353.93 = 128,866.24/x
  3. Step 3: Cross multiply
    133,538.90x = 199,353.93 × 128,866.24
  4. Step 4: Simplify right side
    133,538.90x = 25,689,992,241.58
  5. Step 5: Solve for x
    x = 25,689,992,241.58/133,538.90
  6. Step 6: Final answer
    x = 192,378.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.