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Finding the Fourth Proportional to 116,510.40, 160,801.20 and 74,131.20

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Solution

The fourth proportional to 116,510.40, 160,801.20 and 74,131.20 is: 102,311.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,510.40 : 160,801.20 = 74,131.20 : x
  2. Step 2: Convert to fraction form
    116,510.40/160,801.20 = 74,131.20/x
  3. Step 3: Cross multiply
    116,510.40x = 160,801.20 × 74,131.20
  4. Step 4: Simplify right side
    116,510.40x = 11,920,385,917.44
  5. Step 5: Solve for x
    x = 11,920,385,917.44/116,510.40
  6. Step 6: Final answer
    x = 102,311.78

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1.5x scale

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.