Home / 90,216.40-135,252.51-42,807.64

Finding the Fourth Proportional to 90,216.40, 135,252.51 and 42,807.64

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Solution

The fourth proportional to 90,216.40, 135,252.51 and 42,807.64 is: 64,177.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,216.40 : 135,252.51 = 42,807.64 : x
  2. Step 2: Convert to fraction form
    90,216.40/135,252.51 = 42,807.64/x
  3. Step 3: Cross multiply
    90,216.40x = 135,252.51 × 42,807.64
  4. Step 4: Simplify right side
    90,216.40x = 5,789,840,757.18
  5. Step 5: Solve for x
    x = 5,789,840,757.18/90,216.40
  6. Step 6: Final answer
    x = 64,177.25

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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.