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Finding the Fourth Proportional to 146,808,219.20, 219,909,583.20 and 86,039,758.40

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Solution

The fourth proportional to 146,808,219.20, 219,909,583.20 and 86,039,758.40 is: 128,882,207.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,808,219.20 : 219,909,583.20 = 86,039,758.40 : x
  2. Step 2: Convert to fraction form
    146,808,219.20/219,909,583.20 = 86,039,758.40/x
  3. Step 3: Cross multiply
    146,808,219.20x = 219,909,583.20 × 86,039,758.40
  4. Step 4: Simplify right side
    146,808,219.20x = 18,920,967,408,372,700
  5. Step 5: Solve for x
    x = 18,920,967,408,372,700/146,808,219.20
  6. Step 6: Final answer
    x = 128,882,207.76

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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.