Home / 142,406.02-196,516.41-78,741.70

Finding the Fourth Proportional to 142,406.02, 196,516.41 and 78,741.70

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Solution

The fourth proportional to 142,406.02, 196,516.41 and 78,741.70 is: 108,661.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,406.02 : 196,516.41 = 78,741.70 : x
  2. Step 2: Convert to fraction form
    142,406.02/196,516.41 = 78,741.70/x
  3. Step 3: Cross multiply
    142,406.02x = 196,516.41 × 78,741.70
  4. Step 4: Simplify right side
    142,406.02x = 15,474,036,201.30
  5. Step 5: Solve for x
    x = 15,474,036,201.30/142,406.02
  6. Step 6: Final answer
    x = 108,661.39

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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.