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Finding the Fourth Proportional to 187,166.72, 258,216.80 and 115,422.20

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Solution

The fourth proportional to 187,166.72, 258,216.80 and 115,422.20 is: 159,237.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,166.72 : 258,216.80 = 115,422.20 : x
  2. Step 2: Convert to fraction form
    187,166.72/258,216.80 = 115,422.20/x
  3. Step 3: Cross multiply
    187,166.72x = 258,216.80 × 115,422.20
  4. Step 4: Simplify right side
    187,166.72x = 29,803,951,132.96
  5. Step 5: Solve for x
    x = 29,803,951,132.96/187,166.72
  6. Step 6: Final answer
    x = 159,237.45

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1.5x scale

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.