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Finding the Fourth Proportional to 178,978.04, 246,702.81 and 135,816.92

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Solution

The fourth proportional to 178,978.04, 246,702.81 and 135,816.92 is: 187,209.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,978.04 : 246,702.81 = 135,816.92 : x
  2. Step 2: Convert to fraction form
    178,978.04/246,702.81 = 135,816.92/x
  3. Step 3: Cross multiply
    178,978.04x = 246,702.81 × 135,816.92
  4. Step 4: Simplify right side
    178,978.04x = 33,506,416,010.48
  5. Step 5: Solve for x
    x = 33,506,416,010.48/178,978.04
  6. Step 6: Final answer
    x = 187,209.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.