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Finding the Fourth Proportional to 140,534.08, 210,801.48 and 57,428.08

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Solution

The fourth proportional to 140,534.08, 210,801.48 and 57,428.08 is: 86,142.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,534.08 : 210,801.48 = 57,428.08 : x
  2. Step 2: Convert to fraction form
    140,534.08/210,801.48 = 57,428.08/x
  3. Step 3: Cross multiply
    140,534.08x = 210,801.48 × 57,428.08
  4. Step 4: Simplify right side
    140,534.08x = 12,105,924,257.56
  5. Step 5: Solve for x
    x = 12,105,924,257.56/140,534.08
  6. Step 6: Final answer
    x = 86,142.27

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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.