Home / 200,024.12-275,903.20-128,290.52

Finding the Fourth Proportional to 200,024.12, 275,903.20 and 128,290.52

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Solution

The fourth proportional to 200,024.12, 275,903.20 and 128,290.52 is: 176,957.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,024.12 : 275,903.20 = 128,290.52 : x
  2. Step 2: Convert to fraction form
    200,024.12/275,903.20 = 128,290.52/x
  3. Step 3: Cross multiply
    200,024.12x = 275,903.20 × 128,290.52
  4. Step 4: Simplify right side
    200,024.12x = 35,395,764,997.66
  5. Step 5: Solve for x
    x = 35,395,764,997.66/200,024.12
  6. Step 6: Final answer
    x = 176,957.48

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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.