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Finding the Fourth Proportional to 89,690.58, 134,536.03 and 84,210.09

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Solution

The fourth proportional to 89,690.58, 134,536.03 and 84,210.09 is: 126,315.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,690.58 : 134,536.03 = 84,210.09 : x
  2. Step 2: Convert to fraction form
    89,690.58/134,536.03 = 84,210.09/x
  3. Step 3: Cross multiply
    89,690.58x = 134,536.03 × 84,210.09
  4. Step 4: Simplify right side
    89,690.58x = 11,329,290,773.49
  5. Step 5: Solve for x
    x = 11,329,290,773.49/89,690.58
  6. Step 6: Final answer
    x = 126,315.29

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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.