Home / 187,587.72-258,860.80-102,688.36

Finding the Fourth Proportional to 187,587.72, 258,860.80 and 102,688.36

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Solution

The fourth proportional to 187,587.72, 258,860.80 and 102,688.36 is: 141,704.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,587.72 : 258,860.80 = 102,688.36 : x
  2. Step 2: Convert to fraction form
    187,587.72/258,860.80 = 102,688.36/x
  3. Step 3: Cross multiply
    187,587.72x = 258,860.80 × 102,688.36
  4. Step 4: Simplify right side
    187,587.72x = 26,581,991,020.29
  5. Step 5: Solve for x
    x = 26,581,991,020.29/187,587.72
  6. Step 6: Final answer
    x = 141,704.32

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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.