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Finding the Fourth Proportional to 123,482.32, 170,395.48 and 69,772

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Solution

The fourth proportional to 123,482.32, 170,395.48 and 69,772 is: 96,279.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,482.32 : 170,395.48 = 69,772 : x
  2. Step 2: Convert to fraction form
    123,482.32/170,395.48 = 69,772/x
  3. Step 3: Cross multiply
    123,482.32x = 170,395.48 × 69,772
  4. Step 4: Simplify right side
    123,482.32x = 11,888,833,430.56
  5. Step 5: Solve for x
    x = 11,888,833,430.56/123,482.32
  6. Step 6: Final answer
    x = 96,279.64

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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.