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Finding the Fourth Proportional to 187,776.52, 258,990.32 and 130,415.91

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Solution

The fourth proportional to 187,776.52, 258,990.32 and 130,415.91 is: 179,875.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,776.52 : 258,990.32 = 130,415.91 : x
  2. Step 2: Convert to fraction form
    187,776.52/258,990.32 = 130,415.91/x
  3. Step 3: Cross multiply
    187,776.52x = 258,990.32 × 130,415.91
  4. Step 4: Simplify right side
    187,776.52x = 33,776,458,263.99
  5. Step 5: Solve for x
    x = 33,776,458,263.99/187,776.52
  6. Step 6: Final answer
    x = 179,875.83

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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.