Home / 128,001.47-191,995.01-39,254.73

Finding the Fourth Proportional to 128,001.47, 191,995.01 and 39,254.73

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Solution

The fourth proportional to 128,001.47, 191,995.01 and 39,254.73 is: 58,879.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,001.47 : 191,995.01 = 39,254.73 : x
  2. Step 2: Convert to fraction form
    128,001.47/191,995.01 = 39,254.73/x
  3. Step 3: Cross multiply
    128,001.47x = 191,995.01 × 39,254.73
  4. Step 4: Simplify right side
    128,001.47x = 7,536,711,509.85
  5. Step 5: Solve for x
    x = 7,536,711,509.85/128,001.47
  6. Step 6: Final answer
    x = 58,879.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.