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Finding the Fourth Proportional to 140,655.05, 210,989.37 and 45,885.05

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Solution

The fourth proportional to 140,655.05, 210,989.37 and 45,885.05 is: 68,829.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,655.05 : 210,989.37 = 45,885.05 : x
  2. Step 2: Convert to fraction form
    140,655.05/210,989.37 = 45,885.05/x
  3. Step 3: Cross multiply
    140,655.05x = 210,989.37 × 45,885.05
  4. Step 4: Simplify right side
    140,655.05x = 9,681,257,791.92
  5. Step 5: Solve for x
    x = 9,681,257,791.92/140,655.05
  6. Step 6: Final answer
    x = 68,829.79

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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.