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Finding the Fourth Proportional to 155,201, 214,177.38 and 84,545

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Solution

The fourth proportional to 155,201, 214,177.38 and 84,545 is: 116,672.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,201 : 214,177.38 = 84,545 : x
  2. Step 2: Convert to fraction form
    155,201/214,177.38 = 84,545/x
  3. Step 3: Cross multiply
    155,201x = 214,177.38 × 84,545
  4. Step 4: Simplify right side
    155,201x = 18,107,626,592.10
  5. Step 5: Solve for x
    x = 18,107,626,592.10/155,201
  6. Step 6: Final answer
    x = 116,672.10

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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.