Home / 212,905.89-293,814.36-137,585.61

Finding the Fourth Proportional to 212,905.89, 293,814.36 and 137,585.61

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Solution

The fourth proportional to 212,905.89, 293,814.36 and 137,585.61 is: 189,870.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,905.89 : 293,814.36 = 137,585.61 : x
  2. Step 2: Convert to fraction form
    212,905.89/293,814.36 = 137,585.61/x
  3. Step 3: Cross multiply
    212,905.89x = 293,814.36 × 137,585.61
  4. Step 4: Simplify right side
    212,905.89x = 40,424,627,947.36
  5. Step 5: Solve for x
    x = 40,424,627,947.36/212,905.89
  6. Step 6: Final answer
    x = 189,870.88

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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.