Home / 91,899.20-137,848.80-83,734.40

Finding the Fourth Proportional to 91,899.20, 137,848.80 and 83,734.40

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Solution

The fourth proportional to 91,899.20, 137,848.80 and 83,734.40 is: 125,601.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,899.20 : 137,848.80 = 83,734.40 : x
  2. Step 2: Convert to fraction form
    91,899.20/137,848.80 = 83,734.40/x
  3. Step 3: Cross multiply
    91,899.20x = 137,848.80 × 83,734.40
  4. Step 4: Simplify right side
    91,899.20x = 11,542,686,558.72
  5. Step 5: Solve for x
    x = 11,542,686,558.72/91,899.20
  6. Step 6: Final answer
    x = 125,601.60

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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.