Home / 155,130.20-214,084.74-87,159.26

Finding the Fourth Proportional to 155,130.20, 214,084.74 and 87,159.26

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Solution

The fourth proportional to 155,130.20, 214,084.74 and 87,159.26 is: 120,282.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,130.20 : 214,084.74 = 87,159.26 : x
  2. Step 2: Convert to fraction form
    155,130.20/214,084.74 = 87,159.26/x
  3. Step 3: Cross multiply
    155,130.20x = 214,084.74 × 87,159.26
  4. Step 4: Simplify right side
    155,130.20x = 18,659,467,515.69
  5. Step 5: Solve for x
    x = 18,659,467,515.69/155,130.20
  6. Step 6: Final answer
    x = 120,282.62

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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.