Home / 112,142.80-154,760.64-64,405.84

Finding the Fourth Proportional to 112,142.80, 154,760.64 and 64,405.84

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Solution

The fourth proportional to 112,142.80, 154,760.64 and 64,405.84 is: 88,882.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,142.80 : 154,760.64 = 64,405.84 : x
  2. Step 2: Convert to fraction form
    112,142.80/154,760.64 = 64,405.84/x
  3. Step 3: Cross multiply
    112,142.80x = 154,760.64 × 64,405.84
  4. Step 4: Simplify right side
    112,142.80x = 9,967,489,018.14
  5. Step 5: Solve for x
    x = 9,967,489,018.14/112,142.80
  6. Step 6: Final answer
    x = 88,882.11

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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.