Home / 135,145.94-186,500.07-74,718.05

Finding the Fourth Proportional to 135,145.94, 186,500.07 and 74,718.05

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Solution

The fourth proportional to 135,145.94, 186,500.07 and 74,718.05 is: 103,110.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,145.94 : 186,500.07 = 74,718.05 : x
  2. Step 2: Convert to fraction form
    135,145.94/186,500.07 = 74,718.05/x
  3. Step 3: Cross multiply
    135,145.94x = 186,500.07 × 74,718.05
  4. Step 4: Simplify right side
    135,145.94x = 13,934,920,622.76
  5. Step 5: Solve for x
    x = 13,934,920,622.76/135,145.94
  6. Step 6: Final answer
    x = 103,110.17

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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.