Home / 171,315,521.20-256,973,281.80-90,693,953.20

Finding the Fourth Proportional to 171,315,521.20, 256,973,281.80 and 90,693,953.20

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Solution

The fourth proportional to 171,315,521.20, 256,973,281.80 and 90,693,953.20 is: 136,040,929.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,315,521.20 : 256,973,281.80 = 90,693,953.20 : x
  2. Step 2: Convert to fraction form
    171,315,521.20/256,973,281.80 = 90,693,953.20/x
  3. Step 3: Cross multiply
    171,315,521.20x = 256,973,281.80 × 90,693,953.20
  4. Step 4: Simplify right side
    171,315,521.20x = 23,305,922,793,219,612
  5. Step 5: Solve for x
    x = 23,305,922,793,219,612/171,315,521.20
  6. Step 6: Final answer
    x = 136,040,929.80

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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.