Home / 135,799.48-187,405.32-74,550.70

Finding the Fourth Proportional to 135,799.48, 187,405.32 and 74,550.70

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Solution

The fourth proportional to 135,799.48, 187,405.32 and 74,550.70 is: 102,881.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,799.48 : 187,405.32 = 74,550.70 : x
  2. Step 2: Convert to fraction form
    135,799.48/187,405.32 = 74,550.70/x
  3. Step 3: Cross multiply
    135,799.48x = 187,405.32 × 74,550.70
  4. Step 4: Simplify right side
    135,799.48x = 13,971,197,789.72
  5. Step 5: Solve for x
    x = 13,971,197,789.72/135,799.48
  6. Step 6: Final answer
    x = 102,881.08

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1.5x scale

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.