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Finding the Fourth Proportional to 108,400.80, 162,406.80 and 101,402.40

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Solution

The fourth proportional to 108,400.80, 162,406.80 and 101,402.40 is: 151,921.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,400.80 : 162,406.80 = 101,402.40 : x
  2. Step 2: Convert to fraction form
    108,400.80/162,406.80 = 101,402.40/x
  3. Step 3: Cross multiply
    108,400.80x = 162,406.80 × 101,402.40
  4. Step 4: Simplify right side
    108,400.80x = 16,468,439,296.32
  5. Step 5: Solve for x
    x = 16,468,439,296.32/108,400.80
  6. Step 6: Final answer
    x = 151,921.75

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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.