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Finding the Fourth Proportional to 101,281.80, 139,772.34 and 63,576.84

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Solution

The fourth proportional to 101,281.80, 139,772.34 and 63,576.84 is: 87,738.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,281.80 : 139,772.34 = 63,576.84 : x
  2. Step 2: Convert to fraction form
    101,281.80/139,772.34 = 63,576.84/x
  3. Step 3: Cross multiply
    101,281.80x = 139,772.34 × 63,576.84
  4. Step 4: Simplify right side
    101,281.80x = 8,886,283,696.61
  5. Step 5: Solve for x
    x = 8,886,283,696.61/101,281.80
  6. Step 6: Final answer
    x = 87,738.21

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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.