Home / 127,049.36-190,319.93-76,420.43

Finding the Fourth Proportional to 127,049.36, 190,319.93 and 76,420.43

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Solution

The fourth proportional to 127,049.36, 190,319.93 and 76,420.43 is: 114,477.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,049.36 : 190,319.93 = 76,420.43 : x
  2. Step 2: Convert to fraction form
    127,049.36/190,319.93 = 76,420.43/x
  3. Step 3: Cross multiply
    127,049.36x = 190,319.93 × 76,420.43
  4. Step 4: Simplify right side
    127,049.36x = 14,544,329,554.47
  5. Step 5: Solve for x
    x = 14,544,329,554.47/127,049.36
  6. Step 6: Final answer
    x = 114,477.79

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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.