Home / 127,078.05-190,555.51-38,315.01

Finding the Fourth Proportional to 127,078.05, 190,555.51 and 38,315.01

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Solution

The fourth proportional to 127,078.05, 190,555.51 and 38,315.01 is: 57,453.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,078.05 : 190,555.51 = 38,315.01 : x
  2. Step 2: Convert to fraction form
    127,078.05/190,555.51 = 38,315.01/x
  3. Step 3: Cross multiply
    127,078.05x = 190,555.51 × 38,315.01
  4. Step 4: Simplify right side
    127,078.05x = 7,301,136,271.21
  5. Step 5: Solve for x
    x = 7,301,136,271.21/127,078.05
  6. Step 6: Final answer
    x = 57,453.95

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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.