Home / 78,139.15-117,219.90-24,108.41

Finding the Fourth Proportional to 78,139.15, 117,219.90 and 24,108.41

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Solution

The fourth proportional to 78,139.15, 117,219.90 and 24,108.41 is: 36,166.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,139.15 : 117,219.90 = 24,108.41 : x
  2. Step 2: Convert to fraction form
    78,139.15/117,219.90 = 24,108.41/x
  3. Step 3: Cross multiply
    78,139.15x = 117,219.90 × 24,108.41
  4. Step 4: Simplify right side
    78,139.15x = 2,825,985,409.36
  5. Step 5: Solve for x
    x = 2,825,985,409.36/78,139.15
  6. Step 6: Final answer
    x = 36,166.06

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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.