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Finding the Fourth Proportional to 151,888.88, 209,588.64 and 88,216.40

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Solution

The fourth proportional to 151,888.88, 209,588.64 and 88,216.40 is: 121,728.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,888.88 : 209,588.64 = 88,216.40 : x
  2. Step 2: Convert to fraction form
    151,888.88/209,588.64 = 88,216.40/x
  3. Step 3: Cross multiply
    151,888.88x = 209,588.64 × 88,216.40
  4. Step 4: Simplify right side
    151,888.88x = 18,489,155,301.70
  5. Step 5: Solve for x
    x = 18,489,155,301.70/151,888.88
  6. Step 6: Final answer
    x = 121,728.17

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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.