Home / 142,143.91-196,158.96-77,613.23

Finding the Fourth Proportional to 142,143.91, 196,158.96 and 77,613.23

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Solution

The fourth proportional to 142,143.91, 196,158.96 and 77,613.23 is: 107,106.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,143.91 : 196,158.96 = 77,613.23 : x
  2. Step 2: Convert to fraction form
    142,143.91/196,158.96 = 77,613.23/x
  3. Step 3: Cross multiply
    142,143.91x = 196,158.96 × 77,613.23
  4. Step 4: Simplify right side
    142,143.91x = 15,224,530,969.44
  5. Step 5: Solve for x
    x = 15,224,530,969.44/142,143.91
  6. Step 6: Final answer
    x = 107,106.46

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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.