Home / 139,120.08-191,833.56-103,376.40

Finding the Fourth Proportional to 139,120.08, 191,833.56 and 103,376.40

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Solution

The fourth proportional to 139,120.08, 191,833.56 and 103,376.40 is: 142,546.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,120.08 : 191,833.56 = 103,376.40 : x
  2. Step 2: Convert to fraction form
    139,120.08/191,833.56 = 103,376.40/x
  3. Step 3: Cross multiply
    139,120.08x = 191,833.56 × 103,376.40
  4. Step 4: Simplify right side
    139,120.08x = 19,831,062,831.98
  5. Step 5: Solve for x
    x = 19,831,062,831.98/139,120.08
  6. Step 6: Final answer
    x = 142,546.37

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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.