Home / 142,470.57-196,620.05-81,218.22

Finding the Fourth Proportional to 142,470.57, 196,620.05 and 81,218.22

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Solution

The fourth proportional to 142,470.57, 196,620.05 and 81,218.22 is: 112,087.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,470.57 : 196,620.05 = 81,218.22 : x
  2. Step 2: Convert to fraction form
    142,470.57/196,620.05 = 81,218.22/x
  3. Step 3: Cross multiply
    142,470.57x = 196,620.05 × 81,218.22
  4. Step 4: Simplify right side
    142,470.57x = 15,969,130,477.31
  5. Step 5: Solve for x
    x = 15,969,130,477.31/142,470.57
  6. Step 6: Final answer
    x = 112,087.22

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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.