Home / 101,609.21-140,218.87-56,287.05

Finding the Fourth Proportional to 101,609.21, 140,218.87 and 56,287.05

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Solution

The fourth proportional to 101,609.21, 140,218.87 and 56,287.05 is: 77,675.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,609.21 : 140,218.87 = 56,287.05 : x
  2. Step 2: Convert to fraction form
    101,609.21/140,218.87 = 56,287.05/x
  3. Step 3: Cross multiply
    101,609.21x = 140,218.87 × 56,287.05
  4. Step 4: Simplify right side
    101,609.21x = 7,892,506,546.63
  5. Step 5: Solve for x
    x = 7,892,506,546.63/101,609.21
  6. Step 6: Final answer
    x = 77,675.11

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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.