Home / 142,295.48-196,375.32-81,875.30

Finding the Fourth Proportional to 142,295.48, 196,375.32 and 81,875.30

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Solution

The fourth proportional to 142,295.48, 196,375.32 and 81,875.30 is: 112,992.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,295.48 : 196,375.32 = 81,875.30 : x
  2. Step 2: Convert to fraction form
    142,295.48/196,375.32 = 81,875.30/x
  3. Step 3: Cross multiply
    142,295.48x = 196,375.32 × 81,875.30
  4. Step 4: Simplify right side
    142,295.48x = 16,078,288,237.60
  5. Step 5: Solve for x
    x = 16,078,288,237.60/142,295.48
  6. Step 6: Final answer
    x = 112,992.26

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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.