Home / 155,359.72-214,364.27-90,816.49

Finding the Fourth Proportional to 155,359.72, 214,364.27 and 90,816.49

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Solution

The fourth proportional to 155,359.72, 214,364.27 and 90,816.49 is: 125,307.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,359.72 : 214,364.27 = 90,816.49 : x
  2. Step 2: Convert to fraction form
    155,359.72/214,364.27 = 90,816.49/x
  3. Step 3: Cross multiply
    155,359.72x = 214,364.27 × 90,816.49
  4. Step 4: Simplify right side
    155,359.72x = 19,467,811,077.81
  5. Step 5: Solve for x
    x = 19,467,811,077.81/155,359.72
  6. Step 6: Final answer
    x = 125,307.97

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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.