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Finding the Fourth Proportional to 117,957.65, 162,668.40 and 79,282.98

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Solution

The fourth proportional to 117,957.65, 162,668.40 and 79,282.98 is: 109,334.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,957.65 : 162,668.40 = 79,282.98 : x
  2. Step 2: Convert to fraction form
    117,957.65/162,668.40 = 79,282.98/x
  3. Step 3: Cross multiply
    117,957.65x = 162,668.40 × 79,282.98
  4. Step 4: Simplify right side
    117,957.65x = 12,896,835,503.83
  5. Step 5: Solve for x
    x = 12,896,835,503.83/117,957.65
  6. Step 6: Final answer
    x = 109,334.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.