Home / 140,135.03-210,276.35-81,012.21

Finding the Fourth Proportional to 140,135.03, 210,276.35 and 81,012.21

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Solution

The fourth proportional to 140,135.03, 210,276.35 and 81,012.21 is: 121,560.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,135.03 : 210,276.35 = 81,012.21 : x
  2. Step 2: Convert to fraction form
    140,135.03/210,276.35 = 81,012.21/x
  3. Step 3: Cross multiply
    140,135.03x = 210,276.35 × 81,012.21
  4. Step 4: Simplify right side
    140,135.03x = 17,034,951,419.17
  5. Step 5: Solve for x
    x = 17,034,951,419.17/140,135.03
  6. Step 6: Final answer
    x = 121,560.98

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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.