Home / 139,121.08-191,834.94-103,377.40

Finding the Fourth Proportional to 139,121.08, 191,834.94 and 103,377.40

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Solution

The fourth proportional to 139,121.08, 191,834.94 and 103,377.40 is: 142,547.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,121.08 : 191,834.94 = 103,377.40 : x
  2. Step 2: Convert to fraction form
    139,121.08/191,834.94 = 103,377.40/x
  3. Step 3: Cross multiply
    139,121.08x = 191,834.94 × 103,377.40
  4. Step 4: Simplify right side
    139,121.08x = 19,831,397,326.36
  5. Step 5: Solve for x
    x = 19,831,397,326.36/139,121.08
  6. Step 6: Final answer
    x = 142,547.75

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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.