Home / 142,269.36-196,331.32-78,606.70

Finding the Fourth Proportional to 142,269.36, 196,331.32 and 78,606.70

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Solution

The fourth proportional to 142,269.36, 196,331.32 and 78,606.70 is: 108,477.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,269.36 : 196,331.32 = 78,606.70 : x
  2. Step 2: Convert to fraction form
    142,269.36/196,331.32 = 78,606.70/x
  3. Step 3: Cross multiply
    142,269.36x = 196,331.32 × 78,606.70
  4. Step 4: Simplify right side
    142,269.36x = 15,432,957,662.56
  5. Step 5: Solve for x
    x = 15,432,957,662.56/142,269.36
  6. Step 6: Final answer
    x = 108,477.03

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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.