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Finding the Fourth Proportional to 140,365.80, 210,548.70 and 70,219.80

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Solution

The fourth proportional to 140,365.80, 210,548.70 and 70,219.80 is: 105,329.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,365.80 : 210,548.70 = 70,219.80 : x
  2. Step 2: Convert to fraction form
    140,365.80/210,548.70 = 70,219.80/x
  3. Step 3: Cross multiply
    140,365.80x = 210,548.70 × 70,219.80
  4. Step 4: Simplify right side
    140,365.80x = 14,784,687,604.26
  5. Step 5: Solve for x
    x = 14,784,687,604.26/140,365.80
  6. Step 6: Final answer
    x = 105,329.70

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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.