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Finding the Fourth Proportional to 146,730.66, 219,898.89 and 80,070.90

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Solution

The fourth proportional to 146,730.66, 219,898.89 and 80,070.90 is: 119,998.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,730.66 : 219,898.89 = 80,070.90 : x
  2. Step 2: Convert to fraction form
    146,730.66/219,898.89 = 80,070.90/x
  3. Step 3: Cross multiply
    146,730.66x = 219,898.89 × 80,070.90
  4. Step 4: Simplify right side
    146,730.66x = 17,607,502,031.30
  5. Step 5: Solve for x
    x = 17,607,502,031.30/146,730.66
  6. Step 6: Final answer
    x = 119,998.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.