Home / 131,015.56-180,779.70-74,406.28

Finding the Fourth Proportional to 131,015.56, 180,779.70 and 74,406.28

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Solution

The fourth proportional to 131,015.56, 180,779.70 and 74,406.28 is: 102,668.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,015.56 : 180,779.70 = 74,406.28 : x
  2. Step 2: Convert to fraction form
    131,015.56/180,779.70 = 74,406.28/x
  3. Step 3: Cross multiply
    131,015.56x = 180,779.70 × 74,406.28
  4. Step 4: Simplify right side
    131,015.56x = 13,451,144,976.52
  5. Step 5: Solve for x
    x = 13,451,144,976.52/131,015.56
  6. Step 6: Final answer
    x = 102,668.30

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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.