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Finding the Fourth Proportional to 103,085.91, 154,241.41 and 60,985.86

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Solution

The fourth proportional to 103,085.91, 154,241.41 and 60,985.86 is: 91,249.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,085.91 : 154,241.41 = 60,985.86 : x
  2. Step 2: Convert to fraction form
    103,085.91/154,241.41 = 60,985.86/x
  3. Step 3: Cross multiply
    103,085.91x = 154,241.41 × 60,985.86
  4. Step 4: Simplify right side
    103,085.91x = 9,406,545,036.46
  5. Step 5: Solve for x
    x = 9,406,545,036.46/103,085.91
  6. Step 6: Final answer
    x = 91,249.57

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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.