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Finding the Fourth Proportional to 132,693.39, 183,114.68 and 78,977.03

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Solution

The fourth proportional to 132,693.39, 183,114.68 and 78,977.03 is: 108,986.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,693.39 : 183,114.68 = 78,977.03 : x
  2. Step 2: Convert to fraction form
    132,693.39/183,114.68 = 78,977.03/x
  3. Step 3: Cross multiply
    132,693.39x = 183,114.68 × 78,977.03
  4. Step 4: Simplify right side
    132,693.39x = 14,461,852,265.34
  5. Step 5: Solve for x
    x = 14,461,852,265.34/132,693.39
  6. Step 6: Final answer
    x = 108,986.98

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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.