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Finding the Fourth Proportional to 185,038.80, 277,687.80 and 118,640.40

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Solution

The fourth proportional to 185,038.80, 277,687.80 and 118,640.40 is: 178,043.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,038.80 : 277,687.80 = 118,640.40 : x
  2. Step 2: Convert to fraction form
    185,038.80/277,687.80 = 118,640.40/x
  3. Step 3: Cross multiply
    185,038.80x = 277,687.80 × 118,640.40
  4. Step 4: Simplify right side
    185,038.80x = 32,944,991,667.12
  5. Step 5: Solve for x
    x = 32,944,991,667.12/185,038.80
  6. Step 6: Final answer
    x = 178,043.69

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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.