Home / 135,062.56-186,385.62-74,637.40

Finding the Fourth Proportional to 135,062.56, 186,385.62 and 74,637.40

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Solution

The fourth proportional to 135,062.56, 186,385.62 and 74,637.40 is: 102,999.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,062.56 : 186,385.62 = 74,637.40 : x
  2. Step 2: Convert to fraction form
    135,062.56/186,385.62 = 74,637.40/x
  3. Step 3: Cross multiply
    135,062.56x = 186,385.62 × 74,637.40
  4. Step 4: Simplify right side
    135,062.56x = 13,911,338,074.19
  5. Step 5: Solve for x
    x = 13,911,338,074.19/135,062.56
  6. Step 6: Final answer
    x = 102,999.22

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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.