Home / 131,518,919.16-181,491,639.52-72,784,059.84

Finding the Fourth Proportional to 131,518,919.16, 181,491,639.52 and 72,784,059.84

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Solution

The fourth proportional to 131,518,919.16, 181,491,639.52 and 72,784,059.84 is: 100,439,529.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,518,919.16 : 181,491,639.52 = 72,784,059.84 : x
  2. Step 2: Convert to fraction form
    131,518,919.16/181,491,639.52 = 72,784,059.84/x
  3. Step 3: Cross multiply
    131,518,919.16x = 181,491,639.52 × 72,784,059.84
  4. Step 4: Simplify right side
    131,518,919.16x = 13,209,698,351,646,582
  5. Step 5: Solve for x
    x = 13,209,698,351,646,582/131,518,919.16
  6. Step 6: Final answer
    x = 100,439,529.43

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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.