Home / 142,464.12-196,605.34-81,219.36

Finding the Fourth Proportional to 142,464.12, 196,605.34 and 81,219.36

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Solution

The fourth proportional to 142,464.12, 196,605.34 and 81,219.36 is: 112,085.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,464.12 : 196,605.34 = 81,219.36 : x
  2. Step 2: Convert to fraction form
    142,464.12/196,605.34 = 81,219.36/x
  3. Step 3: Cross multiply
    142,464.12x = 196,605.34 × 81,219.36
  4. Step 4: Simplify right side
    142,464.12x = 15,968,159,887.38
  5. Step 5: Solve for x
    x = 15,968,159,887.38/142,464.12
  6. Step 6: Final answer
    x = 112,085.48

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1.5x scale

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.