Home / 125,384.64-188,078.16-31,890.38

Finding the Fourth Proportional to 125,384.64, 188,078.16 and 31,890.38

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Solution

The fourth proportional to 125,384.64, 188,078.16 and 31,890.38 is: 47,835.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,384.64 : 188,078.16 = 31,890.38 : x
  2. Step 2: Convert to fraction form
    125,384.64/188,078.16 = 31,890.38/x
  3. Step 3: Cross multiply
    125,384.64x = 188,078.16 × 31,890.38
  4. Step 4: Simplify right side
    125,384.64x = 5,997,883,992.10
  5. Step 5: Solve for x
    x = 5,997,883,992.10/125,384.64
  6. Step 6: Final answer
    x = 47,835.88

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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.