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Finding the Fourth Proportional to 153,476.60, 211,769.60 and 85,491.88

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Solution

The fourth proportional to 153,476.60, 211,769.60 and 85,491.88 is: 117,963.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,476.60 : 211,769.60 = 85,491.88 : x
  2. Step 2: Convert to fraction form
    153,476.60/211,769.60 = 85,491.88/x
  3. Step 3: Cross multiply
    153,476.60x = 211,769.60 × 85,491.88
  4. Step 4: Simplify right side
    153,476.60x = 18,104,580,273.96
  5. Step 5: Solve for x
    x = 18,104,580,273.96/153,476.60
  6. Step 6: Final answer
    x = 117,963.13

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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.