Home / 91,431.18-125,894.66-80,036.91

Finding the Fourth Proportional to 91,431.18, 125,894.66 and 80,036.91

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Solution

The fourth proportional to 91,431.18, 125,894.66 and 80,036.91 is: 110,205.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,431.18 : 125,894.66 = 80,036.91 : x
  2. Step 2: Convert to fraction form
    91,431.18/125,894.66 = 80,036.91/x
  3. Step 3: Cross multiply
    91,431.18x = 125,894.66 × 80,036.91
  4. Step 4: Simplify right side
    91,431.18x = 10,076,219,171.72
  5. Step 5: Solve for x
    x = 10,076,219,171.72/91,431.18
  6. Step 6: Final answer
    x = 110,205.50

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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.