Home / 142,425.70-196,485.69-85,804.54

Finding the Fourth Proportional to 142,425.70, 196,485.69 and 85,804.54

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Solution

The fourth proportional to 142,425.70, 196,485.69 and 85,804.54 is: 118,373.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,425.70 : 196,485.69 = 85,804.54 : x
  2. Step 2: Convert to fraction form
    142,425.70/196,485.69 = 85,804.54/x
  3. Step 3: Cross multiply
    142,425.70x = 196,485.69 × 85,804.54
  4. Step 4: Simplify right side
    142,425.70x = 16,859,364,247.03
  5. Step 5: Solve for x
    x = 16,859,364,247.03/142,425.70
  6. Step 6: Final answer
    x = 118,373.05

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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.