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Finding the Fourth Proportional to 117,658.51, 176,486.21 and 28,912.80

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Solution

The fourth proportional to 117,658.51, 176,486.21 and 28,912.80 is: 43,368.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,658.51 : 176,486.21 = 28,912.80 : x
  2. Step 2: Convert to fraction form
    117,658.51/176,486.21 = 28,912.80/x
  3. Step 3: Cross multiply
    117,658.51x = 176,486.21 × 28,912.80
  4. Step 4: Simplify right side
    117,658.51x = 5,102,709,682.34
  5. Step 5: Solve for x
    x = 5,102,709,682.34/117,658.51
  6. Step 6: Final answer
    x = 43,368.81

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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.