Home / 90,820.80-136,192.32-28,496.16

Finding the Fourth Proportional to 90,820.80, 136,192.32 and 28,496.16

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Solution

The fourth proportional to 90,820.80, 136,192.32 and 28,496.16 is: 42,732.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,820.80 : 136,192.32 = 28,496.16 : x
  2. Step 2: Convert to fraction form
    90,820.80/136,192.32 = 28,496.16/x
  3. Step 3: Cross multiply
    90,820.80x = 136,192.32 × 28,496.16
  4. Step 4: Simplify right side
    90,820.80x = 3,880,958,141.49
  5. Step 5: Solve for x
    x = 3,880,958,141.49/90,820.80
  6. Step 6: Final answer
    x = 42,732.04

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1.5x scale

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.