Home / 81,392,103.20-122,088,154.80-70,432,608.80

Finding the Fourth Proportional to 81,392,103.20, 122,088,154.80 and 70,432,608.80

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Solution

The fourth proportional to 81,392,103.20, 122,088,154.80 and 70,432,608.80 is: 105,648,913.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,392,103.20 : 122,088,154.80 = 70,432,608.80 : x
  2. Step 2: Convert to fraction form
    81,392,103.20/122,088,154.80 = 70,432,608.80/x
  3. Step 3: Cross multiply
    81,392,103.20x = 122,088,154.80 × 70,432,608.80
  4. Step 4: Simplify right side
    81,392,103.20x = 8,598,987,246,142,242
  5. Step 5: Solve for x
    x = 8,598,987,246,142,242/81,392,103.20
  6. Step 6: Final answer
    x = 105,648,913.20

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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.