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Finding the Fourth Proportional to 127,888.94, 191,558.49 and 103,764.85

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Solution

The fourth proportional to 127,888.94, 191,558.49 and 103,764.85 is: 155,424.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,888.94 : 191,558.49 = 103,764.85 : x
  2. Step 2: Convert to fraction form
    127,888.94/191,558.49 = 103,764.85/x
  3. Step 3: Cross multiply
    127,888.94x = 191,558.49 × 103,764.85
  4. Step 4: Simplify right side
    127,888.94x = 19,877,037,113.06
  5. Step 5: Solve for x
    x = 19,877,037,113.06/127,888.94
  6. Step 6: Final answer
    x = 155,424.20

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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.