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Finding the Fourth Proportional to 181,908.40, 272,992.20 and 76,802.80

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Solution

The fourth proportional to 181,908.40, 272,992.20 and 76,802.80 is: 115,258.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,908.40 : 272,992.20 = 76,802.80 : x
  2. Step 2: Convert to fraction form
    181,908.40/272,992.20 = 76,802.80/x
  3. Step 3: Cross multiply
    181,908.40x = 272,992.20 × 76,802.80
  4. Step 4: Simplify right side
    181,908.40x = 20,966,565,338.16
  5. Step 5: Solve for x
    x = 20,966,565,338.16/181,908.40
  6. Step 6: Final answer
    x = 115,258.92

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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.