Home / 142,597.08-196,783.23-78,072.18

Finding the Fourth Proportional to 142,597.08, 196,783.23 and 78,072.18

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Solution

The fourth proportional to 142,597.08, 196,783.23 and 78,072.18 is: 107,739.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,597.08 : 196,783.23 = 78,072.18 : x
  2. Step 2: Convert to fraction form
    142,597.08/196,783.23 = 78,072.18/x
  3. Step 3: Cross multiply
    142,597.08x = 196,783.23 × 78,072.18
  4. Step 4: Simplify right side
    142,597.08x = 15,363,295,753.54
  5. Step 5: Solve for x
    x = 15,363,295,753.54/142,597.08
  6. Step 6: Final answer
    x = 107,739.20

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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.