Home / 112,128.72-154,816.68-71,946

Finding the Fourth Proportional to 112,128.72, 154,816.68 and 71,946

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Solution

The fourth proportional to 112,128.72, 154,816.68 and 71,946 is: 99,336.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,128.72 : 154,816.68 = 71,946 : x
  2. Step 2: Convert to fraction form
    112,128.72/154,816.68 = 71,946/x
  3. Step 3: Cross multiply
    112,128.72x = 154,816.68 × 71,946
  4. Step 4: Simplify right side
    112,128.72x = 11,138,440,859.28
  5. Step 5: Solve for x
    x = 11,138,440,859.28/112,128.72
  6. Step 6: Final answer
    x = 99,336.20

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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.