Home / 128,935.40-193,403.10-126,967.10

Finding the Fourth Proportional to 128,935.40, 193,403.10 and 126,967.10

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Solution

The fourth proportional to 128,935.40, 193,403.10 and 126,967.10 is: 190,450.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,935.40 : 193,403.10 = 126,967.10 : x
  2. Step 2: Convert to fraction form
    128,935.40/193,403.10 = 126,967.10/x
  3. Step 3: Cross multiply
    128,935.40x = 193,403.10 × 126,967.10
  4. Step 4: Simplify right side
    128,935.40x = 24,555,830,738.01
  5. Step 5: Solve for x
    x = 24,555,830,738.01/128,935.40
  6. Step 6: Final answer
    x = 190,450.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.