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Finding the Fourth Proportional to 153,119.94, 211,274.61 and 89,445.42

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Solution

The fourth proportional to 153,119.94, 211,274.61 and 89,445.42 is: 123,416.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,119.94 : 211,274.61 = 89,445.42 : x
  2. Step 2: Convert to fraction form
    153,119.94/211,274.61 = 89,445.42/x
  3. Step 3: Cross multiply
    153,119.94x = 211,274.61 × 89,445.42
  4. Step 4: Simplify right side
    153,119.94x = 18,897,546,226.79
  5. Step 5: Solve for x
    x = 18,897,546,226.79/153,119.94
  6. Step 6: Final answer
    x = 123,416.63

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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.