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Finding the Fourth Proportional to 106,645.65, 147,179.70 and 61,338.30

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Solution

The fourth proportional to 106,645.65, 147,179.70 and 61,338.30 is: 84,651.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,645.65 : 147,179.70 = 61,338.30 : x
  2. Step 2: Convert to fraction form
    106,645.65/147,179.70 = 61,338.30/x
  3. Step 3: Cross multiply
    106,645.65x = 147,179.70 × 61,338.30
  4. Step 4: Simplify right side
    106,645.65x = 9,027,752,592.51
  5. Step 5: Solve for x
    x = 9,027,752,592.51/106,645.65
  6. Step 6: Final answer
    x = 84,651.86

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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.