Home / 135,121.18-186,459.96-74,688.22

Finding the Fourth Proportional to 135,121.18, 186,459.96 and 74,688.22

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Solution

The fourth proportional to 135,121.18, 186,459.96 and 74,688.22 is: 103,065.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,121.18 : 186,459.96 = 74,688.22 : x
  2. Step 2: Convert to fraction form
    135,121.18/186,459.96 = 74,688.22/x
  3. Step 3: Cross multiply
    135,121.18x = 186,459.96 × 74,688.22
  4. Step 4: Simplify right side
    135,121.18x = 13,926,362,513.67
  5. Step 5: Solve for x
    x = 13,926,362,513.67/135,121.18
  6. Step 6: Final answer
    x = 103,065.73

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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.