Home / 99,675.50-137,554.44-56,648.21

Finding the Fourth Proportional to 99,675.50, 137,554.44 and 56,648.21

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Solution

The fourth proportional to 99,675.50, 137,554.44 and 56,648.21 is: 78,175.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,675.50 : 137,554.44 = 56,648.21 : x
  2. Step 2: Convert to fraction form
    99,675.50/137,554.44 = 56,648.21/x
  3. Step 3: Cross multiply
    99,675.50x = 137,554.44 × 56,648.21
  4. Step 4: Simplify right side
    99,675.50x = 7,792,212,803.55
  5. Step 5: Solve for x
    x = 7,792,212,803.55/99,675.50
  6. Step 6: Final answer
    x = 78,175.81

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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.