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Finding the Fourth Proportional to 118,710, 178,085.16 and 56,346.48

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Solution

The fourth proportional to 118,710, 178,085.16 and 56,346.48 is: 84,529.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,710 : 178,085.16 = 56,346.48 : x
  2. Step 2: Convert to fraction form
    118,710/178,085.16 = 56,346.48/x
  3. Step 3: Cross multiply
    118,710x = 178,085.16 × 56,346.48
  4. Step 4: Simplify right side
    118,710x = 10,034,471,906.24
  5. Step 5: Solve for x
    x = 10,034,471,906.24/118,710
  6. Step 6: Final answer
    x = 84,529.29

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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.