Home / 126,870.30-190,305.45-91,440.90

Finding the Fourth Proportional to 126,870.30, 190,305.45 and 91,440.90

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Solution

The fourth proportional to 126,870.30, 190,305.45 and 91,440.90 is: 137,161.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,870.30 : 190,305.45 = 91,440.90 : x
  2. Step 2: Convert to fraction form
    126,870.30/190,305.45 = 91,440.90/x
  3. Step 3: Cross multiply
    126,870.30x = 190,305.45 × 91,440.90
  4. Step 4: Simplify right side
    126,870.30x = 17,401,701,622.91
  5. Step 5: Solve for x
    x = 17,401,701,622.91/126,870.30
  6. Step 6: Final answer
    x = 137,161.35

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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.