Home / 140,865,638.40-211,046,515.20-86,949,964.80

Finding the Fourth Proportional to 140,865,638.40, 211,046,515.20 and 86,949,964.80

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Solution

The fourth proportional to 140,865,638.40, 211,046,515.20 and 86,949,964.80 is: 130,269,434.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,865,638.40 : 211,046,515.20 = 86,949,964.80 : x
  2. Step 2: Convert to fraction form
    140,865,638.40/211,046,515.20 = 86,949,964.80/x
  3. Step 3: Cross multiply
    140,865,638.40x = 211,046,515.20 × 86,949,964.80
  4. Step 4: Simplify right side
    140,865,638.40x = 18,350,487,067,802,664
  5. Step 5: Solve for x
    x = 18,350,487,067,802,664/140,865,638.40
  6. Step 6: Final answer
    x = 130,269,434.59

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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.