Home / 118,423.61-177,317.09-90,209.25

Finding the Fourth Proportional to 118,423.61, 177,317.09 and 90,209.25

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Solution

The fourth proportional to 118,423.61, 177,317.09 and 90,209.25 is: 135,071.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,423.61 : 177,317.09 = 90,209.25 : x
  2. Step 2: Convert to fraction form
    118,423.61/177,317.09 = 90,209.25/x
  3. Step 3: Cross multiply
    118,423.61x = 177,317.09 × 90,209.25
  4. Step 4: Simplify right side
    118,423.61x = 15,995,641,250.04
  5. Step 5: Solve for x
    x = 15,995,641,250.04/118,423.61
  6. Step 6: Final answer
    x = 135,071.39

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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.