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Finding the Fourth Proportional to 132,658.88, 183,056.16 and 78,927.68

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Solution

The fourth proportional to 132,658.88, 183,056.16 and 78,927.68 is: 108,912.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,658.88 : 183,056.16 = 78,927.68 : x
  2. Step 2: Convert to fraction form
    132,658.88/183,056.16 = 78,927.68/x
  3. Step 3: Cross multiply
    132,658.88x = 183,056.16 × 78,927.68
  4. Step 4: Simplify right side
    132,658.88x = 14,448,198,018.51
  5. Step 5: Solve for x
    x = 14,448,198,018.51/132,658.88
  6. Step 6: Final answer
    x = 108,912.41

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1.5x scale

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.