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Finding the Fourth Proportional to 186,720, 280,080 and 55,392

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Solution

The fourth proportional to 186,720, 280,080 and 55,392 is: 83,088

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,720 : 280,080 = 55,392 : x
  2. Step 2: Convert to fraction form
    186,720/280,080 = 55,392/x
  3. Step 3: Cross multiply
    186,720x = 280,080 × 55,392
  4. Step 4: Simplify right side
    186,720x = 15,514,191,360
  5. Step 5: Solve for x
    x = 15,514,191,360/186,720
  6. Step 6: Final answer
    x = 83,088

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