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Finding the Fourth Proportional to 103,610.85, 155,531.48 and 64,212.45

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Solution

The fourth proportional to 103,610.85, 155,531.48 and 64,212.45 is: 96,390.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,610.85 : 155,531.48 = 64,212.45 : x
  2. Step 2: Convert to fraction form
    103,610.85/155,531.48 = 64,212.45/x
  3. Step 3: Cross multiply
    103,610.85x = 155,531.48 × 64,212.45
  4. Step 4: Simplify right side
    103,610.85x = 9,987,057,061.86
  5. Step 5: Solve for x
    x = 9,987,057,061.86/103,610.85
  6. Step 6: Final answer
    x = 96,390.07

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1.5x scale

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.