Home / 82,920.16-114,501.36-71,100.64

Finding the Fourth Proportional to 82,920.16, 114,501.36 and 71,100.64

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Solution

The fourth proportional to 82,920.16, 114,501.36 and 71,100.64 is: 98,180.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,920.16 : 114,501.36 = 71,100.64 : x
  2. Step 2: Convert to fraction form
    82,920.16/114,501.36 = 71,100.64/x
  3. Step 3: Cross multiply
    82,920.16x = 114,501.36 × 71,100.64
  4. Step 4: Simplify right side
    82,920.16x = 8,141,119,976.87
  5. Step 5: Solve for x
    x = 8,141,119,976.87/82,920.16
  6. Step 6: Final answer
    x = 98,180.23

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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.