Home / 140,530.12-210,691.28-72,965.14

Finding the Fourth Proportional to 140,530.12, 210,691.28 and 72,965.14

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Solution

The fourth proportional to 140,530.12, 210,691.28 and 72,965.14 is: 109,393.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,530.12 : 210,691.28 = 72,965.14 : x
  2. Step 2: Convert to fraction form
    140,530.12/210,691.28 = 72,965.14/x
  3. Step 3: Cross multiply
    140,530.12x = 210,691.28 × 72,965.14
  4. Step 4: Simplify right side
    140,530.12x = 15,373,118,741.98
  5. Step 5: Solve for x
    x = 15,373,118,741.98/140,530.12
  6. Step 6: Final answer
    x = 109,393.76

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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.