Home / 90,708.39-136,108.62-40,778.37

Finding the Fourth Proportional to 90,708.39, 136,108.62 and 40,778.37

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Solution

The fourth proportional to 90,708.39, 136,108.62 and 40,778.37 is: 61,188.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,708.39 : 136,108.62 = 40,778.37 : x
  2. Step 2: Convert to fraction form
    90,708.39/136,108.62 = 40,778.37/x
  3. Step 3: Cross multiply
    90,708.39x = 136,108.62 × 40,778.37
  4. Step 4: Simplify right side
    90,708.39x = 5,550,287,666.55
  5. Step 5: Solve for x
    x = 5,550,287,666.55/90,708.39
  6. Step 6: Final answer
    x = 61,188.25

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1.5x scale

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.