Home / 230,192.02-317,644.77-128,209.78

Finding the Fourth Proportional to 230,192.02, 317,644.77 and 128,209.78

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Solution

The fourth proportional to 230,192.02, 317,644.77 and 128,209.78 is: 176,918.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,192.02 : 317,644.77 = 128,209.78 : x
  2. Step 2: Convert to fraction form
    230,192.02/317,644.77 = 128,209.78/x
  3. Step 3: Cross multiply
    230,192.02x = 317,644.77 × 128,209.78
  4. Step 4: Simplify right side
    230,192.02x = 40,725,166,079.85
  5. Step 5: Solve for x
    x = 40,725,166,079.85/230,192.02
  6. Step 6: Final answer
    x = 176,918.24

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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.