Home / 135,162.90-186,510.53-74,723.78

Finding the Fourth Proportional to 135,162.90, 186,510.53 and 74,723.78

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Solution

The fourth proportional to 135,162.90, 186,510.53 and 74,723.78 is: 103,110.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,162.90 : 186,510.53 = 74,723.78 : x
  2. Step 2: Convert to fraction form
    135,162.90/186,510.53 = 74,723.78/x
  3. Step 3: Cross multiply
    135,162.90x = 186,510.53 × 74,723.78
  4. Step 4: Simplify right side
    135,162.90x = 13,936,772,464.49
  5. Step 5: Solve for x
    x = 13,936,772,464.49/135,162.90
  6. Step 6: Final answer
    x = 103,110.93

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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.