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Finding the Fourth Proportional to 187,278.59, 280,945.86 and 68,940.93

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Solution

The fourth proportional to 187,278.59, 280,945.86 and 68,940.93 is: 103,421.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,278.59 : 280,945.86 = 68,940.93 : x
  2. Step 2: Convert to fraction form
    187,278.59/280,945.86 = 68,940.93/x
  3. Step 3: Cross multiply
    187,278.59x = 280,945.86 × 68,940.93
  4. Step 4: Simplify right side
    187,278.59x = 19,368,669,663.07
  5. Step 5: Solve for x
    x = 19,368,669,663.07/187,278.59
  6. Step 6: Final answer
    x = 103,421.70

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1.5x scale

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.