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Finding the Fourth Proportional to 140,654.12, 210,980.54 and 57,548.12

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Solution

The fourth proportional to 140,654.12, 210,980.54 and 57,548.12 is: 86,321.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,654.12 : 210,980.54 = 57,548.12 : x
  2. Step 2: Convert to fraction form
    140,654.12/210,980.54 = 57,548.12/x
  3. Step 3: Cross multiply
    140,654.12x = 210,980.54 × 57,548.12
  4. Step 4: Simplify right side
    140,654.12x = 12,141,533,433.58
  5. Step 5: Solve for x
    x = 12,141,533,433.58/140,654.12
  6. Step 6: Final answer
    x = 86,321.92

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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.