Home / 190,078.66-262,070.10-121,975.48

Finding the Fourth Proportional to 190,078.66, 262,070.10 and 121,975.48

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Solution

The fourth proportional to 190,078.66, 262,070.10 and 121,975.48 is: 168,173.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,078.66 : 262,070.10 = 121,975.48 : x
  2. Step 2: Convert to fraction form
    190,078.66/262,070.10 = 121,975.48/x
  3. Step 3: Cross multiply
    190,078.66x = 262,070.10 × 121,975.48
  4. Step 4: Simplify right side
    190,078.66x = 31,966,126,241.15
  5. Step 5: Solve for x
    x = 31,966,126,241.15/190,078.66
  6. Step 6: Final answer
    x = 168,173.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.