Home / 123,678.69-170,680.33-69,962.66

Finding the Fourth Proportional to 123,678.69, 170,680.33 and 69,962.66

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Solution

The fourth proportional to 123,678.69, 170,680.33 and 69,962.66 is: 96,550.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,678.69 : 170,680.33 = 69,962.66 : x
  2. Step 2: Convert to fraction form
    123,678.69/170,680.33 = 69,962.66/x
  3. Step 3: Cross multiply
    123,678.69x = 170,680.33 × 69,962.66
  4. Step 4: Simplify right side
    123,678.69x = 11,941,249,896.48
  5. Step 5: Solve for x
    x = 11,941,249,896.48/123,678.69
  6. Step 6: Final answer
    x = 96,550.59

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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.