Home / 126,825.36-174,859.80-81,423.12

Finding the Fourth Proportional to 126,825.36, 174,859.80 and 81,423.12

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Solution

The fourth proportional to 126,825.36, 174,859.80 and 81,423.12 is: 112,261.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,825.36 : 174,859.80 = 81,423.12 : x
  2. Step 2: Convert to fraction form
    126,825.36/174,859.80 = 81,423.12/x
  3. Step 3: Cross multiply
    126,825.36x = 174,859.80 × 81,423.12
  4. Step 4: Simplify right side
    126,825.36x = 14,237,630,478.58
  5. Step 5: Solve for x
    x = 14,237,630,478.58/126,825.36
  6. Step 6: Final answer
    x = 112,261.70

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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.