Home / 123,243.38-170,075.86-66,654.75

Finding the Fourth Proportional to 123,243.38, 170,075.86 and 66,654.75

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Solution

The fourth proportional to 123,243.38, 170,075.86 and 66,654.75 is: 91,983.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,243.38 : 170,075.86 = 66,654.75 : x
  2. Step 2: Convert to fraction form
    123,243.38/170,075.86 = 66,654.75/x
  3. Step 3: Cross multiply
    123,243.38x = 170,075.86 × 66,654.75
  4. Step 4: Simplify right side
    123,243.38x = 11,336,363,929.34
  5. Step 5: Solve for x
    x = 11,336,363,929.34/123,243.38
  6. Step 6: Final answer
    x = 91,983.55

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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.