Home / 86,839.20-130,200.40-34,221.60

Finding the Fourth Proportional to 86,839.20, 130,200.40 and 34,221.60

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Solution

The fourth proportional to 86,839.20, 130,200.40 and 34,221.60 is: 51,309.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,839.20 : 130,200.40 = 34,221.60 : x
  2. Step 2: Convert to fraction form
    86,839.20/130,200.40 = 34,221.60/x
  3. Step 3: Cross multiply
    86,839.20x = 130,200.40 × 34,221.60
  4. Step 4: Simplify right side
    86,839.20x = 4,455,666,008.64
  5. Step 5: Solve for x
    x = 4,455,666,008.64/86,839.20
  6. Step 6: Final answer
    x = 51,309.39

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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.