Home / 130,462.08-180,112.32-85,879.68

Finding the Fourth Proportional to 130,462.08, 180,112.32 and 85,879.68

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Solution

The fourth proportional to 130,462.08, 180,112.32 and 85,879.68 is: 118,563.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,462.08 : 180,112.32 = 85,879.68 : x
  2. Step 2: Convert to fraction form
    130,462.08/180,112.32 = 85,879.68/x
  3. Step 3: Cross multiply
    130,462.08x = 180,112.32 × 85,879.68
  4. Step 4: Simplify right side
    130,462.08x = 15,467,988,405.66
  5. Step 5: Solve for x
    x = 15,467,988,405.66/130,462.08
  6. Step 6: Final answer
    x = 118,563.10

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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.