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Finding the Fourth Proportional to 153,490.33, 211,816.99 and 88,972.01

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Solution

The fourth proportional to 153,490.33, 211,816.99 and 88,972.01 is: 122,781.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,490.33 : 211,816.99 = 88,972.01 : x
  2. Step 2: Convert to fraction form
    153,490.33/211,816.99 = 88,972.01/x
  3. Step 3: Cross multiply
    153,490.33x = 211,816.99 × 88,972.01
  4. Step 4: Simplify right side
    153,490.33x = 18,845,783,352.45
  5. Step 5: Solve for x
    x = 18,845,783,352.45/153,490.33
  6. Step 6: Final answer
    x = 122,781.57

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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.