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Finding the Fourth Proportional to 159,559.01, 220,180.93 and 87,938.87

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Solution

The fourth proportional to 159,559.01, 220,180.93 and 87,938.87 is: 121,349.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,559.01 : 220,180.93 = 87,938.87 : x
  2. Step 2: Convert to fraction form
    159,559.01/220,180.93 = 87,938.87/x
  3. Step 3: Cross multiply
    159,559.01x = 220,180.93 × 87,938.87
  4. Step 4: Simplify right side
    159,559.01x = 19,362,461,353.65
  5. Step 5: Solve for x
    x = 19,362,461,353.65/159,559.01
  6. Step 6: Final answer
    x = 121,349.84

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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.