Home / 90,146.16-135,215.40-53,443.44

Finding the Fourth Proportional to 90,146.16, 135,215.40 and 53,443.44

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Solution

The fourth proportional to 90,146.16, 135,215.40 and 53,443.44 is: 80,162.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,146.16 : 135,215.40 = 53,443.44 : x
  2. Step 2: Convert to fraction form
    90,146.16/135,215.40 = 53,443.44/x
  3. Step 3: Cross multiply
    90,146.16x = 135,215.40 × 53,443.44
  4. Step 4: Simplify right side
    90,146.16x = 7,226,376,116.98
  5. Step 5: Solve for x
    x = 7,226,376,116.98/90,146.16
  6. Step 6: Final answer
    x = 80,162.88

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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.