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Finding the Fourth Proportional to 316,787.02, 475,182.13 and 80,129.93

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Solution

The fourth proportional to 316,787.02, 475,182.13 and 80,129.93 is: 120,195.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,787.02 : 475,182.13 = 80,129.93 : x
  2. Step 2: Convert to fraction form
    316,787.02/475,182.13 = 80,129.93/x
  3. Step 3: Cross multiply
    316,787.02x = 475,182.13 × 80,129.93
  4. Step 4: Simplify right side
    316,787.02x = 38,076,308,538.40
  5. Step 5: Solve for x
    x = 38,076,308,538.40/316,787.02
  6. Step 6: Final answer
    x = 120,195.29

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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.