Home / 135,338.69-186,762.62-74,909.45

Finding the Fourth Proportional to 135,338.69, 186,762.62 and 74,909.45

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Solution

The fourth proportional to 135,338.69, 186,762.62 and 74,909.45 is: 103,372.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,338.69 : 186,762.62 = 74,909.45 : x
  2. Step 2: Convert to fraction form
    135,338.69/186,762.62 = 74,909.45/x
  3. Step 3: Cross multiply
    135,338.69x = 186,762.62 × 74,909.45
  4. Step 4: Simplify right side
    135,338.69x = 13,990,284,398.22
  5. Step 5: Solve for x
    x = 13,990,284,398.22/135,338.69
  6. Step 6: Final answer
    x = 103,372.40

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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.