Home / 142,605.45-196,733.75-85,985.37

Finding the Fourth Proportional to 142,605.45, 196,733.75 and 85,985.37

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Solution

The fourth proportional to 142,605.45, 196,733.75 and 85,985.37 is: 118,622.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,605.45 : 196,733.75 = 85,985.37 : x
  2. Step 2: Convert to fraction form
    142,605.45/196,733.75 = 85,985.37/x
  3. Step 3: Cross multiply
    142,605.45x = 196,733.75 × 85,985.37
  4. Step 4: Simplify right side
    142,605.45x = 16,916,223,855.31
  5. Step 5: Solve for x
    x = 16,916,223,855.31/142,605.45
  6. Step 6: Final answer
    x = 118,622.56

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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.