Home / 131,019.92-180,808.10-74,434.40

Finding the Fourth Proportional to 131,019.92, 180,808.10 and 74,434.40

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Solution

The fourth proportional to 131,019.92, 180,808.10 and 74,434.40 is: 102,719.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,019.92 : 180,808.10 = 74,434.40 : x
  2. Step 2: Convert to fraction form
    131,019.92/180,808.10 = 74,434.40/x
  3. Step 3: Cross multiply
    131,019.92x = 180,808.10 × 74,434.40
  4. Step 4: Simplify right side
    131,019.92x = 13,458,341,162.43
  5. Step 5: Solve for x
    x = 13,458,341,162.43/131,019.92
  6. Step 6: Final answer
    x = 102,719.81

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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.