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Finding the Fourth Proportional to 195,307.80, 292,904.10 and 76,939.80

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Solution

The fourth proportional to 195,307.80, 292,904.10 and 76,939.80 is: 115,387.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    195,307.80 : 292,904.10 = 76,939.80 : x
  2. Step 2: Convert to fraction form
    195,307.80/292,904.10 = 76,939.80/x
  3. Step 3: Cross multiply
    195,307.80x = 292,904.10 × 76,939.80
  4. Step 4: Simplify right side
    195,307.80x = 22,535,982,873.18
  5. Step 5: Solve for x
    x = 22,535,982,873.18/195,307.80
  6. Step 6: Final answer
    x = 115,387.01

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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.