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Finding the Fourth Proportional to 153,901.63, 211,910.52 and 131,189.71

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Solution

The fourth proportional to 153,901.63, 211,910.52 and 131,189.71 is: 180,637.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,901.63 : 211,910.52 = 131,189.71 : x
  2. Step 2: Convert to fraction form
    153,901.63/211,910.52 = 131,189.71/x
  3. Step 3: Cross multiply
    153,901.63x = 211,910.52 × 131,189.71
  4. Step 4: Simplify right side
    153,901.63x = 27,800,479,008.80
  5. Step 5: Solve for x
    x = 27,800,479,008.80/153,901.63
  6. Step 6: Final answer
    x = 180,637.98

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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.