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Finding the Fourth Proportional to 159,636, 220,307.61 and 88,015.90

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Solution

The fourth proportional to 159,636, 220,307.61 and 88,015.90 is: 121,467.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,636 : 220,307.61 = 88,015.90 : x
  2. Step 2: Convert to fraction form
    159,636/220,307.61 = 88,015.90/x
  3. Step 3: Cross multiply
    159,636x = 220,307.61 × 88,015.90
  4. Step 4: Simplify right side
    159,636x = 19,390,572,571.00
  5. Step 5: Solve for x
    x = 19,390,572,571.00/159,636
  6. Step 6: Final answer
    x = 121,467.42

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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.