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Finding the Fourth Proportional to 125,910.90, 188,693.55 and 102,582.90

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Solution

The fourth proportional to 125,910.90, 188,693.55 and 102,582.90 is: 153,733.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,910.90 : 188,693.55 = 102,582.90 : x
  2. Step 2: Convert to fraction form
    125,910.90/188,693.55 = 102,582.90/x
  3. Step 3: Cross multiply
    125,910.90x = 188,693.55 × 102,582.90
  4. Step 4: Simplify right side
    125,910.90x = 19,356,731,570.30
  5. Step 5: Solve for x
    x = 19,356,731,570.30/125,910.90
  6. Step 6: Final answer
    x = 153,733.57

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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.