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Finding the Fourth Proportional to 159,971.70, 220,759.65 and 88,356.63

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Solution

The fourth proportional to 159,971.70, 220,759.65 and 88,356.63 is: 121,931.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,971.70 : 220,759.65 = 88,356.63 : x
  2. Step 2: Convert to fraction form
    159,971.70/220,759.65 = 88,356.63/x
  3. Step 3: Cross multiply
    159,971.70x = 220,759.65 × 88,356.63
  4. Step 4: Simplify right side
    159,971.70x = 19,505,578,713.98
  5. Step 5: Solve for x
    x = 19,505,578,713.98/159,971.70
  6. Step 6: Final answer
    x = 121,931.43

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1.5x scale

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.