Home / 131,022.42-180,811.54-74,436.90

Finding the Fourth Proportional to 131,022.42, 180,811.54 and 74,436.90

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Solution

The fourth proportional to 131,022.42, 180,811.54 and 74,436.90 is: 102,723.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,022.42 : 180,811.54 = 74,436.90 : x
  2. Step 2: Convert to fraction form
    131,022.42/180,811.54 = 74,436.90/x
  3. Step 3: Cross multiply
    131,022.42x = 180,811.54 × 74,436.90
  4. Step 4: Simplify right side
    131,022.42x = 13,459,050,521.83
  5. Step 5: Solve for x
    x = 13,459,050,521.83/131,022.42
  6. Step 6: Final answer
    x = 102,723.26

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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.