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Finding the Fourth Proportional to 187,116.72, 280,721.52 and 53,993.76

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Solution

The fourth proportional to 187,116.72, 280,721.52 and 53,993.76 is: 81,004.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,116.72 : 280,721.52 = 53,993.76 : x
  2. Step 2: Convert to fraction form
    187,116.72/280,721.52 = 53,993.76/x
  3. Step 3: Cross multiply
    187,116.72x = 280,721.52 × 53,993.76
  4. Step 4: Simplify right side
    187,116.72x = 15,157,210,377.72
  5. Step 5: Solve for x
    x = 15,157,210,377.72/187,116.72
  6. Step 6: Final answer
    x = 81,004.04

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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.