Home / 135,430.09-186,894.06-74,999.43

Finding the Fourth Proportional to 135,430.09, 186,894.06 and 74,999.43

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Solution

The fourth proportional to 135,430.09, 186,894.06 and 74,999.43 is: 103,499.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,430.09 : 186,894.06 = 74,999.43 : x
  2. Step 2: Convert to fraction form
    135,430.09/186,894.06 = 74,999.43/x
  3. Step 3: Cross multiply
    135,430.09x = 186,894.06 × 74,999.43
  4. Step 4: Simplify right side
    135,430.09x = 14,016,947,970.39
  5. Step 5: Solve for x
    x = 14,016,947,970.39/135,430.09
  6. Step 6: Final answer
    x = 103,499.51

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Similar ratio
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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.