Home / 100,026.20-149,885.70-86,816.60

Finding the Fourth Proportional to 100,026.20, 149,885.70 and 86,816.60

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Solution

The fourth proportional to 100,026.20, 149,885.70 and 86,816.60 is: 130,091.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,026.20 : 149,885.70 = 86,816.60 : x
  2. Step 2: Convert to fraction form
    100,026.20/149,885.70 = 86,816.60/x
  3. Step 3: Cross multiply
    100,026.20x = 149,885.70 × 86,816.60
  4. Step 4: Simplify right side
    100,026.20x = 13,012,566,862.62
  5. Step 5: Solve for x
    x = 13,012,566,862.62/100,026.20
  6. Step 6: Final answer
    x = 130,091.58

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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.