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Finding the Fourth Proportional to 106,388.16, 146,750.70 and 63,338.88

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Solution

The fourth proportional to 106,388.16, 146,750.70 and 63,338.88 is: 87,368.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,388.16 : 146,750.70 = 63,338.88 : x
  2. Step 2: Convert to fraction form
    106,388.16/146,750.70 = 63,338.88/x
  3. Step 3: Cross multiply
    106,388.16x = 146,750.70 × 63,338.88
  4. Step 4: Simplify right side
    106,388.16x = 9,295,024,977.22
  5. Step 5: Solve for x
    x = 9,295,024,977.22/106,388.16
  6. Step 6: Final answer
    x = 87,368.98

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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.