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Finding the Fourth Proportional to 159,113.93, 219,582.86 and 87,499.40

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Solution

The fourth proportional to 159,113.93, 219,582.86 and 87,499.40 is: 120,752.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,113.93 : 219,582.86 = 87,499.40 : x
  2. Step 2: Convert to fraction form
    159,113.93/219,582.86 = 87,499.40/x
  3. Step 3: Cross multiply
    159,113.93x = 219,582.86 × 87,499.40
  4. Step 4: Simplify right side
    159,113.93x = 19,213,366,964.87
  5. Step 5: Solve for x
    x = 19,213,366,964.87/159,113.93
  6. Step 6: Final answer
    x = 120,752.27

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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.