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Finding the Fourth Proportional to 153,188.54, 211,393.38 and 88,647.54

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Solution

The fourth proportional to 153,188.54, 211,393.38 and 88,647.54 is: 122,329.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,188.54 : 211,393.38 = 88,647.54 : x
  2. Step 2: Convert to fraction form
    153,188.54/211,393.38 = 88,647.54/x
  3. Step 3: Cross multiply
    153,188.54x = 211,393.38 × 88,647.54
  4. Step 4: Simplify right side
    153,188.54x = 18,739,503,109.29
  5. Step 5: Solve for x
    x = 18,739,503,109.29/153,188.54
  6. Step 6: Final answer
    x = 122,329.67

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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.