Home / 118,422.07-177,314.80-90,207.72

Finding the Fourth Proportional to 118,422.07, 177,314.80 and 90,207.72

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Solution

The fourth proportional to 118,422.07, 177,314.80 and 90,207.72 is: 135,069.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,422.07 : 177,314.80 = 90,207.72 : x
  2. Step 2: Convert to fraction form
    118,422.07/177,314.80 = 90,207.72/x
  3. Step 3: Cross multiply
    118,422.07x = 177,314.80 × 90,207.72
  4. Step 4: Simplify right side
    118,422.07x = 15,995,163,379.22
  5. Step 5: Solve for x
    x = 15,995,163,379.22/118,422.07
  6. Step 6: Final answer
    x = 135,069.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.