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Finding the Fourth Proportional to 153,154.62, 211,322.37 and 89,480.10

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Solution

The fourth proportional to 153,154.62, 211,322.37 and 89,480.10 is: 123,464.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,154.62 : 211,322.37 = 89,480.10 : x
  2. Step 2: Convert to fraction form
    153,154.62/211,322.37 = 89,480.10/x
  3. Step 3: Cross multiply
    153,154.62x = 211,322.37 × 89,480.10
  4. Step 4: Simplify right side
    153,154.62x = 18,909,146,799.84
  5. Step 5: Solve for x
    x = 18,909,146,799.84/153,154.62
  6. Step 6: Final answer
    x = 123,464.42

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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.