Home / 105,137.82-145,092.15-57,392.87

Finding the Fourth Proportional to 105,137.82, 145,092.15 and 57,392.87

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Solution

The fourth proportional to 105,137.82, 145,092.15 and 57,392.87 is: 79,203.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,137.82 : 145,092.15 = 57,392.87 : x
  2. Step 2: Convert to fraction form
    105,137.82/145,092.15 = 57,392.87/x
  3. Step 3: Cross multiply
    105,137.82x = 145,092.15 × 57,392.87
  4. Step 4: Simplify right side
    105,137.82x = 8,327,254,177.51
  5. Step 5: Solve for x
    x = 8,327,254,177.51/105,137.82
  6. Step 6: Final answer
    x = 79,203.22

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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.