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Finding the Fourth Proportional to 155,756.34, 214,943.62 and 84,136.34

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Solution

The fourth proportional to 155,756.34, 214,943.62 and 84,136.34 is: 116,108.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,756.34 : 214,943.62 = 84,136.34 : x
  2. Step 2: Convert to fraction form
    155,756.34/214,943.62 = 84,136.34/x
  3. Step 3: Cross multiply
    155,756.34x = 214,943.62 × 84,136.34
  4. Step 4: Simplify right side
    155,756.34x = 18,084,569,493.15
  5. Step 5: Solve for x
    x = 18,084,569,493.15/155,756.34
  6. Step 6: Final answer
    x = 116,108.08

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1.5x scale

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.