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Finding the Fourth Proportional to 108,145.80, 162,153.90 and 55,657.80

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Solution

The fourth proportional to 108,145.80, 162,153.90 and 55,657.80 is: 83,453.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,145.80 : 162,153.90 = 55,657.80 : x
  2. Step 2: Convert to fraction form
    108,145.80/162,153.90 = 55,657.80/x
  3. Step 3: Cross multiply
    108,145.80x = 162,153.90 × 55,657.80
  4. Step 4: Simplify right side
    108,145.80x = 9,025,129,335.42
  5. Step 5: Solve for x
    x = 9,025,129,335.42/108,145.80
  6. Step 6: Final answer
    x = 83,453.35

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1.5x scale

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.