Home / 90,185.13-135,239.22-31,026.78

Finding the Fourth Proportional to 90,185.13, 135,239.22 and 31,026.78

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Solution

The fourth proportional to 90,185.13, 135,239.22 and 31,026.78 is: 46,526.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,185.13 : 135,239.22 = 31,026.78 : x
  2. Step 2: Convert to fraction form
    90,185.13/135,239.22 = 31,026.78/x
  3. Step 3: Cross multiply
    90,185.13x = 135,239.22 × 31,026.78
  4. Step 4: Simplify right side
    90,185.13x = 4,196,037,526.31
  5. Step 5: Solve for x
    x = 4,196,037,526.31/90,185.13
  6. Step 6: Final answer
    x = 46,526.93

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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.