Home / 200,087.12-275,850.02-128,342.58

Finding the Fourth Proportional to 200,087.12, 275,850.02 and 128,342.58

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Solution

The fourth proportional to 200,087.12, 275,850.02 and 128,342.58 is: 176,939.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,087.12 : 275,850.02 = 128,342.58 : x
  2. Step 2: Convert to fraction form
    200,087.12/275,850.02 = 128,342.58/x
  3. Step 3: Cross multiply
    200,087.12x = 275,850.02 × 128,342.58
  4. Step 4: Simplify right side
    200,087.12x = 35,403,303,259.85
  5. Step 5: Solve for x
    x = 35,403,303,259.85/200,087.12
  6. Step 6: Final answer
    x = 176,939.44

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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.