Home / 99,384.67-137,148.39-56,940.47

Finding the Fourth Proportional to 99,384.67, 137,148.39 and 56,940.47

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Solution

The fourth proportional to 99,384.67, 137,148.39 and 56,940.47 is: 78,576.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,384.67 : 137,148.39 = 56,940.47 : x
  2. Step 2: Convert to fraction form
    99,384.67/137,148.39 = 56,940.47/x
  3. Step 3: Cross multiply
    99,384.67x = 137,148.39 × 56,940.47
  4. Step 4: Simplify right side
    99,384.67x = 7,809,293,614.91
  5. Step 5: Solve for x
    x = 7,809,293,614.91/99,384.67
  6. Step 6: Final answer
    x = 78,576.44

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1.5x scale

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.