Home / 122,951.20-184,426.80-85,626.40

Finding the Fourth Proportional to 122,951.20, 184,426.80 and 85,626.40

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Solution

The fourth proportional to 122,951.20, 184,426.80 and 85,626.40 is: 128,439.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,951.20 : 184,426.80 = 85,626.40 : x
  2. Step 2: Convert to fraction form
    122,951.20/184,426.80 = 85,626.40/x
  3. Step 3: Cross multiply
    122,951.20x = 184,426.80 × 85,626.40
  4. Step 4: Simplify right side
    122,951.20x = 15,791,802,947.52
  5. Step 5: Solve for x
    x = 15,791,802,947.52/122,951.20
  6. Step 6: Final answer
    x = 128,439.60

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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.