Home / 116,979.08-161,432.10-66,681.32

Finding the Fourth Proportional to 116,979.08, 161,432.10 and 66,681.32

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Solution

The fourth proportional to 116,979.08, 161,432.10 and 66,681.32 is: 92,020.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,979.08 : 161,432.10 = 66,681.32 : x
  2. Step 2: Convert to fraction form
    116,979.08/161,432.10 = 66,681.32/x
  3. Step 3: Cross multiply
    116,979.08x = 161,432.10 × 66,681.32
  4. Step 4: Simplify right side
    116,979.08x = 10,764,505,518.37
  5. Step 5: Solve for x
    x = 10,764,505,518.37/116,979.08
  6. Step 6: Final answer
    x = 92,020.77

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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.