Home / 127,720.08-191,578.05-43,538.90

Finding the Fourth Proportional to 127,720.08, 191,578.05 and 43,538.90

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Solution

The fourth proportional to 127,720.08, 191,578.05 and 43,538.90 is: 65,307.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,720.08 : 191,578.05 = 43,538.90 : x
  2. Step 2: Convert to fraction form
    127,720.08/191,578.05 = 43,538.90/x
  3. Step 3: Cross multiply
    127,720.08x = 191,578.05 × 43,538.90
  4. Step 4: Simplify right side
    127,720.08x = 8,341,096,603.25
  5. Step 5: Solve for x
    x = 8,341,096,603.25/127,720.08
  6. Step 6: Final answer
    x = 65,307.64

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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.