Home / 127,145.12-190,734.42-47,172.20

Finding the Fourth Proportional to 127,145.12, 190,734.42 and 47,172.20

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Solution

The fourth proportional to 127,145.12, 190,734.42 and 47,172.20 is: 70,764.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,145.12 : 190,734.42 = 47,172.20 : x
  2. Step 2: Convert to fraction form
    127,145.12/190,734.42 = 47,172.20/x
  3. Step 3: Cross multiply
    127,145.12x = 190,734.42 × 47,172.20
  4. Step 4: Simplify right side
    127,145.12x = 8,997,362,207.12
  5. Step 5: Solve for x
    x = 8,997,362,207.12/127,145.12
  6. Step 6: Final answer
    x = 70,764.51

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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.