Home / 86,090.32-129,185.76-36,166.80

Finding the Fourth Proportional to 86,090.32, 129,185.76 and 36,166.80

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Solution

The fourth proportional to 86,090.32, 129,185.76 and 36,166.80 is: 54,271.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,090.32 : 129,185.76 = 36,166.80 : x
  2. Step 2: Convert to fraction form
    86,090.32/129,185.76 = 36,166.80/x
  3. Step 3: Cross multiply
    86,090.32x = 129,185.76 × 36,166.80
  4. Step 4: Simplify right side
    86,090.32x = 4,672,235,544.77
  5. Step 5: Solve for x
    x = 4,672,235,544.77/86,090.32
  6. Step 6: Final answer
    x = 54,271.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.