Home / 127,681.09-191,055.07-75,115.33

Finding the Fourth Proportional to 127,681.09, 191,055.07 and 75,115.33

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Solution

The fourth proportional to 127,681.09, 191,055.07 and 75,115.33 is: 112,398.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,681.09 : 191,055.07 = 75,115.33 : x
  2. Step 2: Convert to fraction form
    127,681.09/191,055.07 = 75,115.33/x
  3. Step 3: Cross multiply
    127,681.09x = 191,055.07 × 75,115.33
  4. Step 4: Simplify right side
    127,681.09x = 14,351,164,631.22
  5. Step 5: Solve for x
    x = 14,351,164,631.22/127,681.09
  6. Step 6: Final answer
    x = 112,398.51

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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.