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Finding the Fourth Proportional to 140,120.34, 210,141.60 and 38,895.12

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Solution

The fourth proportional to 140,120.34, 210,141.60 and 38,895.12 is: 58,331.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,120.34 : 210,141.60 = 38,895.12 : x
  2. Step 2: Convert to fraction form
    140,120.34/210,141.60 = 38,895.12/x
  3. Step 3: Cross multiply
    140,120.34x = 210,141.60 × 38,895.12
  4. Step 4: Simplify right side
    140,120.34x = 8,173,482,748.99
  5. Step 5: Solve for x
    x = 8,173,482,748.99/140,120.34
  6. Step 6: Final answer
    x = 58,331.88

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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.