Home / 90,894.15-125,363.40-80,695.95

Finding the Fourth Proportional to 90,894.15, 125,363.40 and 80,695.95

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Solution

The fourth proportional to 90,894.15, 125,363.40 and 80,695.95 is: 111,297.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,894.15 : 125,363.40 = 80,695.95 : x
  2. Step 2: Convert to fraction form
    90,894.15/125,363.40 = 80,695.95/x
  3. Step 3: Cross multiply
    90,894.15x = 125,363.40 × 80,695.95
  4. Step 4: Simplify right side
    90,894.15x = 10,116,317,885.51
  5. Step 5: Solve for x
    x = 10,116,317,885.51/90,894.15
  6. Step 6: Final answer
    x = 111,297.79

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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.