Home / 131,990.06-182,145.18-74,640.64

Finding the Fourth Proportional to 131,990.06, 182,145.18 and 74,640.64

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Solution

The fourth proportional to 131,990.06, 182,145.18 and 74,640.64 is: 103,003.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,990.06 : 182,145.18 = 74,640.64 : x
  2. Step 2: Convert to fraction form
    131,990.06/182,145.18 = 74,640.64/x
  3. Step 3: Cross multiply
    131,990.06x = 182,145.18 × 74,640.64
  4. Step 4: Simplify right side
    131,990.06x = 13,595,432,808.12
  5. Step 5: Solve for x
    x = 13,595,432,808.12/131,990.06
  6. Step 6: Final answer
    x = 103,003.46

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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.