Home / 99,406.86-137,185.26-56,973.60

Finding the Fourth Proportional to 99,406.86, 137,185.26 and 56,973.60

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Solution

The fourth proportional to 99,406.86, 137,185.26 and 56,973.60 is: 78,625.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,406.86 : 137,185.26 = 56,973.60 : x
  2. Step 2: Convert to fraction form
    99,406.86/137,185.26 = 56,973.60/x
  3. Step 3: Cross multiply
    99,406.86x = 137,185.26 × 56,973.60
  4. Step 4: Simplify right side
    99,406.86x = 7,815,938,129.14
  5. Step 5: Solve for x
    x = 7,815,938,129.14/99,406.86
  6. Step 6: Final answer
    x = 78,625.74

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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.