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Finding the Fourth Proportional to 187,412.01, 258,630.78 and 102,529.06

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Solution

The fourth proportional to 187,412.01, 258,630.78 and 102,529.06 is: 141,491.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,412.01 : 258,630.78 = 102,529.06 : x
  2. Step 2: Convert to fraction form
    187,412.01/258,630.78 = 102,529.06/x
  3. Step 3: Cross multiply
    187,412.01x = 258,630.78 × 102,529.06
  4. Step 4: Simplify right side
    187,412.01x = 26,517,170,760.47
  5. Step 5: Solve for x
    x = 26,517,170,760.47/187,412.01
  6. Step 6: Final answer
    x = 141,491.31

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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.