Home / 105,203.05-145,177.89-57,456.59

Finding the Fourth Proportional to 105,203.05, 145,177.89 and 57,456.59

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Solution

The fourth proportional to 105,203.05, 145,177.89 and 57,456.59 is: 79,288.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,203.05 : 145,177.89 = 57,456.59 : x
  2. Step 2: Convert to fraction form
    105,203.05/145,177.89 = 57,456.59/x
  3. Step 3: Cross multiply
    105,203.05x = 145,177.89 × 57,456.59
  4. Step 4: Simplify right side
    105,203.05x = 8,341,425,776.91
  5. Step 5: Solve for x
    x = 8,341,425,776.91/105,203.05
  6. Step 6: Final answer
    x = 79,288.82

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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.