Home / 156,811,086.45-216,390,411.09-87,194,972.79

Finding the Fourth Proportional to 156,811,086.45, 216,390,411.09 and 87,194,972.79

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Solution

The fourth proportional to 156,811,086.45, 216,390,411.09 and 87,194,972.79 is: 120,324,120.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,811,086.45 : 216,390,411.09 = 87,194,972.79 : x
  2. Step 2: Convert to fraction form
    156,811,086.45/216,390,411.09 = 87,194,972.79/x
  3. Step 3: Cross multiply
    156,811,086.45x = 216,390,411.09 × 87,194,972.79
  4. Step 4: Simplify right side
    156,811,086.45x = 18,868,156,007,009,464
  5. Step 5: Solve for x
    x = 18,868,156,007,009,464/156,811,086.45
  6. Step 6: Final answer
    x = 120,324,120.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.