Home / 188,815.78-260,563.80-103,931.02

Finding the Fourth Proportional to 188,815.78, 260,563.80 and 103,931.02

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Solution

The fourth proportional to 188,815.78, 260,563.80 and 103,931.02 is: 143,423.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,815.78 : 260,563.80 = 103,931.02 : x
  2. Step 2: Convert to fraction form
    188,815.78/260,563.80 = 103,931.02/x
  3. Step 3: Cross multiply
    188,815.78x = 260,563.80 × 103,931.02
  4. Step 4: Simplify right side
    188,815.78x = 27,080,661,509.08
  5. Step 5: Solve for x
    x = 27,080,661,509.08/188,815.78
  6. Step 6: Final answer
    x = 143,423.72

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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.