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Finding the Fourth Proportional to 153,900.88, 211,909.48 and 131,188.96

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Solution

The fourth proportional to 153,900.88, 211,909.48 and 131,188.96 is: 180,636.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,900.88 : 211,909.48 = 131,188.96 : x
  2. Step 2: Convert to fraction form
    153,900.88/211,909.48 = 131,188.96/x
  3. Step 3: Cross multiply
    153,900.88x = 211,909.48 × 131,188.96
  4. Step 4: Simplify right side
    153,900.88x = 27,800,184,295.34
  5. Step 5: Solve for x
    x = 27,800,184,295.34/153,900.88
  6. Step 6: Final answer
    x = 180,636.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.