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Finding the Fourth Proportional to 159,437.51, 220,033.74 and 87,817.51

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Solution

The fourth proportional to 159,437.51, 220,033.74 and 87,817.51 is: 121,193.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,437.51 : 220,033.74 = 87,817.51 : x
  2. Step 2: Convert to fraction form
    159,437.51/220,033.74 = 87,817.51/x
  3. Step 3: Cross multiply
    159,437.51x = 220,033.74 × 87,817.51
  4. Step 4: Simplify right side
    159,437.51x = 19,322,815,162.79
  5. Step 5: Solve for x
    x = 19,322,815,162.79/159,437.51
  6. Step 6: Final answer
    x = 121,193.66

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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.