Home / 140,006.85-209,971.58-38,780.70

Finding the Fourth Proportional to 140,006.85, 209,971.58 and 38,780.70

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Solution

The fourth proportional to 140,006.85, 209,971.58 and 38,780.70 is: 58,160.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,006.85 : 209,971.58 = 38,780.70 : x
  2. Step 2: Convert to fraction form
    140,006.85/209,971.58 = 38,780.70/x
  3. Step 3: Cross multiply
    140,006.85x = 209,971.58 × 38,780.70
  4. Step 4: Simplify right side
    140,006.85x = 8,142,844,658.60
  5. Step 5: Solve for x
    x = 8,142,844,658.60/140,006.85
  6. Step 6: Final answer
    x = 58,160.33

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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.