Home / 90,543.40-135,944.70-51,177.40

Finding the Fourth Proportional to 90,543.40, 135,944.70 and 51,177.40

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Solution

The fourth proportional to 90,543.40, 135,944.70 and 51,177.40 is: 76,839.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,543.40 : 135,944.70 = 51,177.40 : x
  2. Step 2: Convert to fraction form
    90,543.40/135,944.70 = 51,177.40/x
  3. Step 3: Cross multiply
    90,543.40x = 135,944.70 × 51,177.40
  4. Step 4: Simplify right side
    90,543.40x = 6,957,296,289.78
  5. Step 5: Solve for x
    x = 6,957,296,289.78/90,543.40
  6. Step 6: Final answer
    x = 76,839.35

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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.