Home / 142,033.08-196,011.46-81,622.68

Finding the Fourth Proportional to 142,033.08, 196,011.46 and 81,622.68

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Solution

The fourth proportional to 142,033.08, 196,011.46 and 81,622.68 is: 112,642.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,033.08 : 196,011.46 = 81,622.68 : x
  2. Step 2: Convert to fraction form
    142,033.08/196,011.46 = 81,622.68/x
  3. Step 3: Cross multiply
    142,033.08x = 196,011.46 × 81,622.68
  4. Step 4: Simplify right side
    142,033.08x = 15,998,980,675.91
  5. Step 5: Solve for x
    x = 15,998,980,675.91/142,033.08
  6. Step 6: Final answer
    x = 112,642.64

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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.