Home / 112,986.88-155,923.36-61,996.40

Finding the Fourth Proportional to 112,986.88, 155,923.36 and 61,996.40

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Solution

The fourth proportional to 112,986.88, 155,923.36 and 61,996.40 is: 85,555.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,986.88 : 155,923.36 = 61,996.40 : x
  2. Step 2: Convert to fraction form
    112,986.88/155,923.36 = 61,996.40/x
  3. Step 3: Cross multiply
    112,986.88x = 155,923.36 × 61,996.40
  4. Step 4: Simplify right side
    112,986.88x = 9,666,686,995.90
  5. Step 5: Solve for x
    x = 9,666,686,995.90/112,986.88
  6. Step 6: Final answer
    x = 85,555.84

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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.