Home / 99,669.89-137,556.11-56,655.84

Finding the Fourth Proportional to 99,669.89, 137,556.11 and 56,655.84

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Solution

The fourth proportional to 99,669.89, 137,556.11 and 56,655.84 is: 78,191.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,669.89 : 137,556.11 = 56,655.84 : x
  2. Step 2: Convert to fraction form
    99,669.89/137,556.11 = 56,655.84/x
  3. Step 3: Cross multiply
    99,669.89x = 137,556.11 × 56,655.84
  4. Step 4: Simplify right side
    99,669.89x = 7,793,356,675.90
  5. Step 5: Solve for x
    x = 7,793,356,675.90/99,669.89
  6. Step 6: Final answer
    x = 78,191.69

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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.