Home / 90,230.25-135,344.76-70,525.38

Finding the Fourth Proportional to 90,230.25, 135,344.76 and 70,525.38

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Solution

The fourth proportional to 90,230.25, 135,344.76 and 70,525.38 is: 105,787.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,230.25 : 135,344.76 = 70,525.38 : x
  2. Step 2: Convert to fraction form
    90,230.25/135,344.76 = 70,525.38/x
  3. Step 3: Cross multiply
    90,230.25x = 135,344.76 × 70,525.38
  4. Step 4: Simplify right side
    90,230.25x = 9,545,239,953.29
  5. Step 5: Solve for x
    x = 9,545,239,953.29/90,230.25
  6. Step 6: Final answer
    x = 105,787.59

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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.