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Finding the Fourth Proportional to 140,012.40, 210,059.28 and 45,240.60

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Solution

The fourth proportional to 140,012.40, 210,059.28 and 45,240.60 is: 67,874.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,012.40 : 210,059.28 = 45,240.60 : x
  2. Step 2: Convert to fraction form
    140,012.40/210,059.28 = 45,240.60/x
  3. Step 3: Cross multiply
    140,012.40x = 210,059.28 × 45,240.60
  4. Step 4: Simplify right side
    140,012.40x = 9,503,207,862.77
  5. Step 5: Solve for x
    x = 9,503,207,862.77/140,012.40
  6. Step 6: Final answer
    x = 67,874.04

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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.