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Finding the Fourth Proportional to 159,108.05, 219,569.13 and 87,492.89

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Solution

The fourth proportional to 159,108.05, 219,569.13 and 87,492.89 is: 120,740.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,108.05 : 219,569.13 = 87,492.89 : x
  2. Step 2: Convert to fraction form
    159,108.05/219,569.13 = 87,492.89/x
  3. Step 3: Cross multiply
    159,108.05x = 219,569.13 × 87,492.89
  4. Step 4: Simplify right side
    159,108.05x = 19,210,736,640.64
  5. Step 5: Solve for x
    x = 19,210,736,640.64/159,108.05
  6. Step 6: Final answer
    x = 120,740.20

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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.