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Finding the Fourth Proportional to 131,722.79, 197,604.76 and 42,955.65

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Solution

The fourth proportional to 131,722.79, 197,604.76 and 42,955.65 is: 64,440.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,722.79 : 197,604.76 = 42,955.65 : x
  2. Step 2: Convert to fraction form
    131,722.79/197,604.76 = 42,955.65/x
  3. Step 3: Cross multiply
    131,722.79x = 197,604.76 × 42,955.65
  4. Step 4: Simplify right side
    131,722.79x = 8,488,240,307.49
  5. Step 5: Solve for x
    x = 8,488,240,307.49/131,722.79
  6. Step 6: Final answer
    x = 64,440.18

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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.