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Finding the Fourth Proportional to 131,804.65, 197,838.20 and 72,668.17

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Solution

The fourth proportional to 131,804.65, 197,838.20 and 72,668.17 is: 109,074.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,804.65 : 197,838.20 = 72,668.17 : x
  2. Step 2: Convert to fraction form
    131,804.65/197,838.20 = 72,668.17/x
  3. Step 3: Cross multiply
    131,804.65x = 197,838.20 × 72,668.17
  4. Step 4: Simplify right side
    131,804.65x = 14,376,539,950.09
  5. Step 5: Solve for x
    x = 14,376,539,950.09/131,804.65
  6. Step 6: Final answer
    x = 109,074.60

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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.