Home / 187,064.86-258,073.05-138,123.79

Finding the Fourth Proportional to 187,064.86, 258,073.05 and 138,123.79

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Solution

The fourth proportional to 187,064.86, 258,073.05 and 138,123.79 is: 190,554.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,064.86 : 258,073.05 = 138,123.79 : x
  2. Step 2: Convert to fraction form
    187,064.86/258,073.05 = 138,123.79/x
  3. Step 3: Cross multiply
    187,064.86x = 258,073.05 × 138,123.79
  4. Step 4: Simplify right side
    187,064.86x = 35,646,027,762.86
  5. Step 5: Solve for x
    x = 35,646,027,762.86/187,064.86
  6. Step 6: Final answer
    x = 190,554.38

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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.