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Finding the Fourth Proportional to 140,599.80, 210,899.70 and 45,829.80

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Solution

The fourth proportional to 140,599.80, 210,899.70 and 45,829.80 is: 68,744.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,599.80 : 210,899.70 = 45,829.80 : x
  2. Step 2: Convert to fraction form
    140,599.80/210,899.70 = 45,829.80/x
  3. Step 3: Cross multiply
    140,599.80x = 210,899.70 × 45,829.80
  4. Step 4: Simplify right side
    140,599.80x = 9,665,491,071.06
  5. Step 5: Solve for x
    x = 9,665,491,071.06/140,599.80
  6. Step 6: Final answer
    x = 68,744.70

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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.