Home / 155,290.28-214,288.80-87,296.48

Finding the Fourth Proportional to 155,290.28, 214,288.80 and 87,296.48

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Solution

The fourth proportional to 155,290.28, 214,288.80 and 87,296.48 is: 120,462.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,290.28 : 214,288.80 = 87,296.48 : x
  2. Step 2: Convert to fraction form
    155,290.28/214,288.80 = 87,296.48/x
  3. Step 3: Cross multiply
    155,290.28x = 214,288.80 × 87,296.48
  4. Step 4: Simplify right side
    155,290.28x = 18,706,657,943.42
  5. Step 5: Solve for x
    x = 18,706,657,943.42/155,290.28
  6. Step 6: Final answer
    x = 120,462.52

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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.