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Finding the Fourth Proportional to 170,503.23, 255,774 and 139,179.93

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Solution

The fourth proportional to 170,503.23, 255,774 and 139,179.93 is: 208,785.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,503.23 : 255,774 = 139,179.93 : x
  2. Step 2: Convert to fraction form
    170,503.23/255,774 = 139,179.93/x
  3. Step 3: Cross multiply
    170,503.23x = 255,774 × 139,179.93
  4. Step 4: Simplify right side
    170,503.23x = 35,598,607,415.82
  5. Step 5: Solve for x
    x = 35,598,607,415.82/170,503.23
  6. Step 6: Final answer
    x = 208,785.53

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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.