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Finding the Fourth Proportional to 187,262.95, 280,763.19 and 68,918.89

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Solution

The fourth proportional to 187,262.95, 280,763.19 and 68,918.89 is: 103,330.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,262.95 : 280,763.19 = 68,918.89 : x
  2. Step 2: Convert to fraction form
    187,262.95/280,763.19 = 68,918.89/x
  3. Step 3: Cross multiply
    187,262.95x = 280,763.19 × 68,918.89
  4. Step 4: Simplify right side
    187,262.95x = 19,349,887,407.66
  5. Step 5: Solve for x
    x = 19,349,887,407.66/187,262.95
  6. Step 6: Final answer
    x = 103,330.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.