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Finding the Fourth Proportional to 116,916.40, 161,342.44 and 65,928.32

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Solution

The fourth proportional to 116,916.40, 161,342.44 and 65,928.32 is: 90,979.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,916.40 : 161,342.44 = 65,928.32 : x
  2. Step 2: Convert to fraction form
    116,916.40/161,342.44 = 65,928.32/x
  3. Step 3: Cross multiply
    116,916.40x = 161,342.44 × 65,928.32
  4. Step 4: Simplify right side
    116,916.40x = 10,637,036,013.90
  5. Step 5: Solve for x
    x = 10,637,036,013.90/116,916.40
  6. Step 6: Final answer
    x = 90,979.85

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.