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Finding the Fourth Proportional to 153,551.64, 211,828.86 and 89,850.36

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Solution

The fourth proportional to 153,551.64, 211,828.86 and 89,850.36 is: 123,951.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,551.64 : 211,828.86 = 89,850.36 : x
  2. Step 2: Convert to fraction form
    153,551.64/211,828.86 = 89,850.36/x
  3. Step 3: Cross multiply
    153,551.64x = 211,828.86 × 89,850.36
  4. Step 4: Simplify right side
    153,551.64x = 19,032,899,329.39
  5. Step 5: Solve for x
    x = 19,032,899,329.39/153,551.64
  6. Step 6: Final answer
    x = 123,951.13

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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.