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Finding the Fourth Proportional to 114,770.60, 172,155.90 and 69,864.20

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Solution

The fourth proportional to 114,770.60, 172,155.90 and 69,864.20 is: 104,796.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,770.60 : 172,155.90 = 69,864.20 : x
  2. Step 2: Convert to fraction form
    114,770.60/172,155.90 = 69,864.20/x
  3. Step 3: Cross multiply
    114,770.60x = 172,155.90 × 69,864.20
  4. Step 4: Simplify right side
    114,770.60x = 12,027,534,228.78
  5. Step 5: Solve for x
    x = 12,027,534,228.78/114,770.60
  6. Step 6: Final answer
    x = 104,796.30

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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.