Home / 123,678.12-170,675.86-69,961.99

Finding the Fourth Proportional to 123,678.12, 170,675.86 and 69,961.99

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Solution

The fourth proportional to 123,678.12, 170,675.86 and 69,961.99 is: 96,547.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,678.12 : 170,675.86 = 69,961.99 : x
  2. Step 2: Convert to fraction form
    123,678.12/170,675.86 = 69,961.99/x
  3. Step 3: Cross multiply
    123,678.12x = 170,675.86 × 69,961.99
  4. Step 4: Simplify right side
    123,678.12x = 11,940,822,810.56
  5. Step 5: Solve for x
    x = 11,940,822,810.56/123,678.12
  6. Step 6: Final answer
    x = 96,547.58

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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.