Home / 131,020.42-180,808.78-74,434.90

Finding the Fourth Proportional to 131,020.42, 180,808.78 and 74,434.90

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Solution

The fourth proportional to 131,020.42, 180,808.78 and 74,434.90 is: 102,720.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,020.42 : 180,808.78 = 74,434.90 : x
  2. Step 2: Convert to fraction form
    131,020.42/180,808.78 = 74,434.90/x
  3. Step 3: Cross multiply
    131,020.42x = 180,808.78 × 74,434.90
  4. Step 4: Simplify right side
    131,020.42x = 13,458,483,458.42
  5. Step 5: Solve for x
    x = 13,458,483,458.42/131,020.42
  6. Step 6: Final answer
    x = 102,720.50

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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.