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Finding the Fourth Proportional to 159,062.96, 219,507.36 and 87,450.32

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Solution

The fourth proportional to 159,062.96, 219,507.36 and 87,450.32 is: 120,681.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,062.96 : 219,507.36 = 87,450.32 : x
  2. Step 2: Convert to fraction form
    159,062.96/219,507.36 = 87,450.32/x
  3. Step 3: Cross multiply
    159,062.96x = 219,507.36 × 87,450.32
  4. Step 4: Simplify right side
    159,062.96x = 19,195,988,874.36
  5. Step 5: Solve for x
    x = 19,195,988,874.36/159,062.96
  6. Step 6: Final answer
    x = 120,681.70

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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.