Home / 90,230.87-135,270.18-56,877.40

Finding the Fourth Proportional to 90,230.87, 135,270.18 and 56,877.40

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Solution

The fourth proportional to 90,230.87, 135,270.18 and 56,877.40 is: 85,268.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,230.87 : 135,270.18 = 56,877.40 : x
  2. Step 2: Convert to fraction form
    90,230.87/135,270.18 = 56,877.40/x
  3. Step 3: Cross multiply
    90,230.87x = 135,270.18 × 56,877.40
  4. Step 4: Simplify right side
    90,230.87x = 7,693,816,135.93
  5. Step 5: Solve for x
    x = 7,693,816,135.93/90,230.87
  6. Step 6: Final answer
    x = 85,268.11

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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.