Home / 85,150.16-117,621.96-77,201.36

Finding the Fourth Proportional to 85,150.16, 117,621.96 and 77,201.36

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Solution

The fourth proportional to 85,150.16, 117,621.96 and 77,201.36 is: 106,641.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,150.16 : 117,621.96 = 77,201.36 : x
  2. Step 2: Convert to fraction form
    85,150.16/117,621.96 = 77,201.36/x
  3. Step 3: Cross multiply
    85,150.16x = 117,621.96 × 77,201.36
  4. Step 4: Simplify right side
    85,150.16x = 9,080,575,277.87
  5. Step 5: Solve for x
    x = 9,080,575,277.87/85,150.16
  6. Step 6: Final answer
    x = 106,641.91

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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.