Home / 90,543.96-135,818.81-43,164.23

Finding the Fourth Proportional to 90,543.96, 135,818.81 and 43,164.23

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Solution

The fourth proportional to 90,543.96, 135,818.81 and 43,164.23 is: 64,747.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,543.96 : 135,818.81 = 43,164.23 : x
  2. Step 2: Convert to fraction form
    90,543.96/135,818.81 = 43,164.23/x
  3. Step 3: Cross multiply
    90,543.96x = 135,818.81 × 43,164.23
  4. Step 4: Simplify right side
    90,543.96x = 5,862,513,458.25
  5. Step 5: Solve for x
    x = 5,862,513,458.25/90,543.96
  6. Step 6: Final answer
    x = 64,747.70

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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.