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Finding the Fourth Proportional to 140,160.48, 210,129.12 and 80,928.96

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Solution

The fourth proportional to 140,160.48, 210,129.12 and 80,928.96 is: 121,329.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,160.48 : 210,129.12 = 80,928.96 : x
  2. Step 2: Convert to fraction form
    140,160.48/210,129.12 = 80,928.96/x
  3. Step 3: Cross multiply
    140,160.48x = 210,129.12 × 80,928.96
  4. Step 4: Simplify right side
    140,160.48x = 17,005,531,147.32
  5. Step 5: Solve for x
    x = 17,005,531,147.32/140,160.48
  6. Step 6: Final answer
    x = 121,329.00

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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.