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Finding the Fourth Proportional to 123,810.54, 170,862.69 and 69,365.07

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Solution

The fourth proportional to 123,810.54, 170,862.69 and 69,365.07 is: 95,726.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,810.54 : 170,862.69 = 69,365.07 : x
  2. Step 2: Convert to fraction form
    123,810.54/170,862.69 = 69,365.07/x
  3. Step 3: Cross multiply
    123,810.54x = 170,862.69 × 69,365.07
  4. Step 4: Simplify right side
    123,810.54x = 11,851,902,452.24
  5. Step 5: Solve for x
    x = 11,851,902,452.24/123,810.54
  6. Step 6: Final answer
    x = 95,726.12

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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.