Home / 118,423.07-177,316.29-90,208.72

Finding the Fourth Proportional to 118,423.07, 177,316.29 and 90,208.72

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Solution

The fourth proportional to 118,423.07, 177,316.29 and 90,208.72 is: 135,070.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,423.07 : 177,316.29 = 90,208.72 : x
  2. Step 2: Convert to fraction form
    118,423.07/177,316.29 = 90,208.72/x
  3. Step 3: Cross multiply
    118,423.07x = 177,316.29 × 90,208.72
  4. Step 4: Simplify right side
    118,423.07x = 15,995,475,556.05
  5. Step 5: Solve for x
    x = 15,995,475,556.05/118,423.07
  6. Step 6: Final answer
    x = 135,070.60

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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.