Home / 142,272.81-196,330.23-78,609.24

Finding the Fourth Proportional to 142,272.81, 196,330.23 and 78,609.24

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Solution

The fourth proportional to 142,272.81, 196,330.23 and 78,609.24 is: 108,477.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,272.81 : 196,330.23 = 78,609.24 : x
  2. Step 2: Convert to fraction form
    142,272.81/196,330.23 = 78,609.24/x
  3. Step 3: Cross multiply
    142,272.81x = 196,330.23 × 78,609.24
  4. Step 4: Simplify right side
    142,272.81x = 15,433,370,169.33
  5. Step 5: Solve for x
    x = 15,433,370,169.33/142,272.81
  6. Step 6: Final answer
    x = 108,477.30

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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.