Home / 112,031.64-154,555.09-66,684.20

Finding the Fourth Proportional to 112,031.64, 154,555.09 and 66,684.20

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Solution

The fourth proportional to 112,031.64, 154,555.09 and 66,684.20 is: 91,995.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,031.64 : 154,555.09 = 66,684.20 : x
  2. Step 2: Convert to fraction form
    112,031.64/154,555.09 = 66,684.20/x
  3. Step 3: Cross multiply
    112,031.64x = 154,555.09 × 66,684.20
  4. Step 4: Simplify right side
    112,031.64x = 10,306,382,532.58
  5. Step 5: Solve for x
    x = 10,306,382,532.58/112,031.64
  6. Step 6: Final answer
    x = 91,995.28

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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.