Home / 142,370.08-196,467.78-78,706.48

Finding the Fourth Proportional to 142,370.08, 196,467.78 and 78,706.48

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Solution

The fourth proportional to 142,370.08, 196,467.78 and 78,706.48 is: 108,613.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,370.08 : 196,467.78 = 78,706.48 : x
  2. Step 2: Convert to fraction form
    142,370.08/196,467.78 = 78,706.48/x
  3. Step 3: Cross multiply
    142,370.08x = 196,467.78 × 78,706.48
  4. Step 4: Simplify right side
    142,370.08x = 15,463,287,397.21
  5. Step 5: Solve for x
    x = 15,463,287,397.21/142,370.08
  6. Step 6: Final answer
    x = 108,613.32

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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.