Home / 209,831.76-314,840.64-109,968.12

Finding the Fourth Proportional to 209,831.76, 314,840.64 and 109,968.12

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Solution

The fourth proportional to 209,831.76, 314,840.64 and 109,968.12 is: 165,000.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,831.76 : 314,840.64 = 109,968.12 : x
  2. Step 2: Convert to fraction form
    209,831.76/314,840.64 = 109,968.12/x
  3. Step 3: Cross multiply
    209,831.76x = 314,840.64 × 109,968.12
  4. Step 4: Simplify right side
    209,831.76x = 34,622,433,280.40
  5. Step 5: Solve for x
    x = 34,622,433,280.40/209,831.76
  6. Step 6: Final answer
    x = 165,000.92

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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.