Home / 103,199.86-142,445.28-60,782.86

Finding the Fourth Proportional to 103,199.86, 142,445.28 and 60,782.86

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Solution

The fourth proportional to 103,199.86, 142,445.28 and 60,782.86 is: 83,897.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,199.86 : 142,445.28 = 60,782.86 : x
  2. Step 2: Convert to fraction form
    103,199.86/142,445.28 = 60,782.86/x
  3. Step 3: Cross multiply
    103,199.86x = 142,445.28 × 60,782.86
  4. Step 4: Simplify right side
    103,199.86x = 8,658,231,511.90
  5. Step 5: Solve for x
    x = 8,658,231,511.90/103,199.86
  6. Step 6: Final answer
    x = 83,897.71

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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.