Home / 161,865.70-242,868.60-86,898.38

Finding the Fourth Proportional to 161,865.70, 242,868.60 and 86,898.38

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Solution

The fourth proportional to 161,865.70, 242,868.60 and 86,898.38 is: 130,385.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,865.70 : 242,868.60 = 86,898.38 : x
  2. Step 2: Convert to fraction form
    161,865.70/242,868.60 = 86,898.38/x
  3. Step 3: Cross multiply
    161,865.70x = 242,868.60 × 86,898.38
  4. Step 4: Simplify right side
    161,865.70x = 21,104,887,892.87
  5. Step 5: Solve for x
    x = 21,104,887,892.87/161,865.70
  6. Step 6: Final answer
    x = 130,385.18

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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.