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Finding the Fourth Proportional to 125,089.56, 172,620.39 and 69,899.34

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Solution

The fourth proportional to 125,089.56, 172,620.39 and 69,899.34 is: 96,459.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,089.56 : 172,620.39 = 69,899.34 : x
  2. Step 2: Convert to fraction form
    125,089.56/172,620.39 = 69,899.34/x
  3. Step 3: Cross multiply
    125,089.56x = 172,620.39 × 69,899.34
  4. Step 4: Simplify right side
    125,089.56x = 12,066,051,331.54
  5. Step 5: Solve for x
    x = 12,066,051,331.54/125,089.56
  6. Step 6: Final answer
    x = 96,459.30

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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.