Home / 207,972.81-287,012.70-117,326.94

Finding the Fourth Proportional to 207,972.81, 287,012.70 and 117,326.94

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Solution

The fourth proportional to 207,972.81, 287,012.70 and 117,326.94 is: 161,916.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,972.81 : 287,012.70 = 117,326.94 : x
  2. Step 2: Convert to fraction form
    207,972.81/287,012.70 = 117,326.94/x
  3. Step 3: Cross multiply
    207,972.81x = 287,012.70 × 117,326.94
  4. Step 4: Simplify right side
    207,972.81x = 33,674,321,832.14
  5. Step 5: Solve for x
    x = 33,674,321,832.14/207,972.81
  6. Step 6: Final answer
    x = 161,916.94

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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.