Home / 123,985.38-170,941.44-80,300.76

Finding the Fourth Proportional to 123,985.38, 170,941.44 and 80,300.76

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Solution

The fourth proportional to 123,985.38, 170,941.44 and 80,300.76 is: 110,712.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,985.38 : 170,941.44 = 80,300.76 : x
  2. Step 2: Convert to fraction form
    123,985.38/170,941.44 = 80,300.76/x
  3. Step 3: Cross multiply
    123,985.38x = 170,941.44 × 80,300.76
  4. Step 4: Simplify right side
    123,985.38x = 13,726,727,145.99
  5. Step 5: Solve for x
    x = 13,726,727,145.99/123,985.38
  6. Step 6: Final answer
    x = 110,712.47

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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.