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Finding the Fourth Proportional to 108,431.20, 162,646.80 and 101,864.80

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Solution

The fourth proportional to 108,431.20, 162,646.80 and 101,864.80 is: 152,797.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,431.20 : 162,646.80 = 101,864.80 : x
  2. Step 2: Convert to fraction form
    108,431.20/162,646.80 = 101,864.80/x
  3. Step 3: Cross multiply
    108,431.20x = 162,646.80 × 101,864.80
  4. Step 4: Simplify right side
    108,431.20x = 16,567,983,752.64
  5. Step 5: Solve for x
    x = 16,567,983,752.64/108,431.20
  6. Step 6: Final answer
    x = 152,797.20

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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.