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Finding the Fourth Proportional to 187,091, 280,461.54 and 68,730.56

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Solution

The fourth proportional to 187,091, 280,461.54 and 68,730.56 is: 103,031.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,091 : 280,461.54 = 68,730.56 : x
  2. Step 2: Convert to fraction form
    187,091/280,461.54 = 68,730.56/x
  3. Step 3: Cross multiply
    187,091x = 280,461.54 × 68,730.56
  4. Step 4: Simplify right side
    187,091x = 19,276,278,702.66
  5. Step 5: Solve for x
    x = 19,276,278,702.66/187,091
  6. Step 6: Final answer
    x = 103,031.57

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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.