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Finding the Fourth Proportional to 127,237.64, 175,664.30 and 79,555.77

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Solution

The fourth proportional to 127,237.64, 175,664.30 and 79,555.77 is: 109,834.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,237.64 : 175,664.30 = 79,555.77 : x
  2. Step 2: Convert to fraction form
    127,237.64/175,664.30 = 79,555.77/x
  3. Step 3: Cross multiply
    127,237.64x = 175,664.30 × 79,555.77
  4. Step 4: Simplify right side
    127,237.64x = 13,975,108,250.23
  5. Step 5: Solve for x
    x = 13,975,108,250.23/127,237.64
  6. Step 6: Final answer
    x = 109,834.71

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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.