Home / 315,134.10-472,629.06-90,492.75

Finding the Fourth Proportional to 315,134.10, 472,629.06 and 90,492.75

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Solution

The fourth proportional to 315,134.10, 472,629.06 and 90,492.75 is: 135,718.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,134.10 : 472,629.06 = 90,492.75 : x
  2. Step 2: Convert to fraction form
    315,134.10/472,629.06 = 90,492.75/x
  3. Step 3: Cross multiply
    315,134.10x = 472,629.06 × 90,492.75
  4. Step 4: Simplify right side
    315,134.10x = 42,769,503,369.32
  5. Step 5: Solve for x
    x = 42,769,503,369.32/315,134.10
  6. Step 6: Final answer
    x = 135,718.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.