Home / 129,106,150.65-178,086,884.99-78,846,791.13

Finding the Fourth Proportional to 129,106,150.65, 178,086,884.99 and 78,846,791.13

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Solution

The fourth proportional to 129,106,150.65, 178,086,884.99 and 78,846,791.13 is: 108,759,957.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,106,150.65 : 178,086,884.99 = 78,846,791.13 : x
  2. Step 2: Convert to fraction form
    129,106,150.65/178,086,884.99 = 78,846,791.13/x
  3. Step 3: Cross multiply
    129,106,150.65x = 178,086,884.99 × 78,846,791.13
  4. Step 4: Simplify right side
    129,106,150.65x = 14,041,579,423,404,628
  5. Step 5: Solve for x
    x = 14,041,579,423,404,628/129,106,150.65
  6. Step 6: Final answer
    x = 108,759,957.23

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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.