Home / 139,725.08-208,943.81-103,769.43

Finding the Fourth Proportional to 139,725.08, 208,943.81 and 103,769.43

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Solution

The fourth proportional to 139,725.08, 208,943.81 and 103,769.43 is: 155,176.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,725.08 : 208,943.81 = 103,769.43 : x
  2. Step 2: Convert to fraction form
    139,725.08/208,943.81 = 103,769.43/x
  3. Step 3: Cross multiply
    139,725.08x = 208,943.81 × 103,769.43
  4. Step 4: Simplify right side
    139,725.08x = 21,681,980,065.73
  5. Step 5: Solve for x
    x = 21,681,980,065.73/139,725.08
  6. Step 6: Final answer
    x = 155,176.01

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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.