Home / 230,133.02-317,563.35-128,150.78

Finding the Fourth Proportional to 230,133.02, 317,563.35 and 128,150.78

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Solution

The fourth proportional to 230,133.02, 317,563.35 and 128,150.78 is: 176,836.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,133.02 : 317,563.35 = 128,150.78 : x
  2. Step 2: Convert to fraction form
    230,133.02/317,563.35 = 128,150.78/x
  3. Step 3: Cross multiply
    230,133.02x = 317,563.35 × 128,150.78
  4. Step 4: Simplify right side
    230,133.02x = 40,695,991,001.91
  5. Step 5: Solve for x
    x = 40,695,991,001.91/230,133.02
  6. Step 6: Final answer
    x = 176,836.82

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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.