Home / 99,933.18-137,915.64-56,914.48

Finding the Fourth Proportional to 99,933.18, 137,915.64 and 56,914.48

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Solution

The fourth proportional to 99,933.18, 137,915.64 and 56,914.48 is: 78,546.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,933.18 : 137,915.64 = 56,914.48 : x
  2. Step 2: Convert to fraction form
    99,933.18/137,915.64 = 56,914.48/x
  3. Step 3: Cross multiply
    99,933.18x = 137,915.64 × 56,914.48
  4. Step 4: Simplify right side
    99,933.18x = 7,849,397,106.86
  5. Step 5: Solve for x
    x = 7,849,397,106.86/99,933.18
  6. Step 6: Final answer
    x = 78,546.46

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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.