Home / 230,079.69-317,507.45-128,102.92

Finding the Fourth Proportional to 230,079.69, 317,507.45 and 128,102.92

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Solution

The fourth proportional to 230,079.69, 317,507.45 and 128,102.92 is: 176,780.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,079.69 : 317,507.45 = 128,102.92 : x
  2. Step 2: Convert to fraction form
    230,079.69/317,507.45 = 128,102.92/x
  3. Step 3: Cross multiply
    230,079.69x = 317,507.45 × 128,102.92
  4. Step 4: Simplify right side
    230,079.69x = 40,673,630,032.47
  5. Step 5: Solve for x
    x = 40,673,630,032.47/230,079.69
  6. Step 6: Final answer
    x = 176,780.62

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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.