Home / 123,636.30-170,569.80-80,666.34

Finding the Fourth Proportional to 123,636.30, 170,569.80 and 80,666.34

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Solution

The fourth proportional to 123,636.30, 170,569.80 and 80,666.34 is: 111,288.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,636.30 : 170,569.80 = 80,666.34 : x
  2. Step 2: Convert to fraction form
    123,636.30/170,569.80 = 80,666.34/x
  3. Step 3: Cross multiply
    123,636.30x = 170,569.80 × 80,666.34
  4. Step 4: Simplify right side
    123,636.30x = 13,759,241,480.53
  5. Step 5: Solve for x
    x = 13,759,241,480.53/123,636.30
  6. Step 6: Final answer
    x = 111,288.04

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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.