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Finding the Fourth Proportional to 127,415.81, 191,124.87 and 38,669.31

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Solution

The fourth proportional to 127,415.81, 191,124.87 and 38,669.31 is: 58,004.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,415.81 : 191,124.87 = 38,669.31 : x
  2. Step 2: Convert to fraction form
    127,415.81/191,124.87 = 38,669.31/x
  3. Step 3: Cross multiply
    127,415.81x = 191,124.87 × 38,669.31
  4. Step 4: Simplify right side
    127,415.81x = 7,390,666,846.74
  5. Step 5: Solve for x
    x = 7,390,666,846.74/127,415.81
  6. Step 6: Final answer
    x = 58,004.32

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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.