Home / 131,395.38-181,325.62-71,779.38

Finding the Fourth Proportional to 131,395.38, 181,325.62 and 71,779.38

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Solution

The fourth proportional to 131,395.38, 181,325.62 and 71,779.38 is: 99,055.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,395.38 : 181,325.62 = 71,779.38 : x
  2. Step 2: Convert to fraction form
    131,395.38/181,325.62 = 71,779.38/x
  3. Step 3: Cross multiply
    131,395.38x = 181,325.62 × 71,779.38
  4. Step 4: Simplify right side
    131,395.38x = 13,015,440,581.72
  5. Step 5: Solve for x
    x = 13,015,440,581.72/131,395.38
  6. Step 6: Final answer
    x = 99,055.54

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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.