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Finding the Fourth Proportional to 187,143.73, 258,270.59 and 105,492.08

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Solution

The fourth proportional to 187,143.73, 258,270.59 and 105,492.08 is: 145,585.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,143.73 : 258,270.59 = 105,492.08 : x
  2. Step 2: Convert to fraction form
    187,143.73/258,270.59 = 105,492.08/x
  3. Step 3: Cross multiply
    187,143.73x = 258,270.59 × 105,492.08
  4. Step 4: Simplify right side
    187,143.73x = 27,245,502,651.33
  5. Step 5: Solve for x
    x = 27,245,502,651.33/187,143.73
  6. Step 6: Final answer
    x = 145,585.98

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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.