Home / 127,419.84-190,833.12-122,990.40

Finding the Fourth Proportional to 127,419.84, 190,833.12 and 122,990.40

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Solution

The fourth proportional to 127,419.84, 190,833.12 and 122,990.40 is: 184,199.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,419.84 : 190,833.12 = 122,990.40 : x
  2. Step 2: Convert to fraction form
    127,419.84/190,833.12 = 122,990.40/x
  3. Step 3: Cross multiply
    127,419.84x = 190,833.12 × 122,990.40
  4. Step 4: Simplify right side
    127,419.84x = 23,470,641,762.05
  5. Step 5: Solve for x
    x = 23,470,641,762.05/127,419.84
  6. Step 6: Final answer
    x = 184,199.27

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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.