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Finding the Fourth Proportional to 159,437.65, 220,025.45 and 87,817.93

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Solution

The fourth proportional to 159,437.65, 220,025.45 and 87,817.93 is: 121,189.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,437.65 : 220,025.45 = 87,817.93 : x
  2. Step 2: Convert to fraction form
    159,437.65/220,025.45 = 87,817.93/x
  3. Step 3: Cross multiply
    159,437.65x = 220,025.45 × 87,817.93
  4. Step 4: Simplify right side
    159,437.65x = 19,322,179,566.32
  5. Step 5: Solve for x
    x = 19,322,179,566.32/159,437.65
  6. Step 6: Final answer
    x = 121,189.57

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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.