Home / 90,818.35-136,228.30-31,653.93

Finding the Fourth Proportional to 90,818.35, 136,228.30 and 31,653.93

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Solution

The fourth proportional to 90,818.35, 136,228.30 and 31,653.93 is: 47,481.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,818.35 : 136,228.30 = 31,653.93 : x
  2. Step 2: Convert to fraction form
    90,818.35/136,228.30 = 31,653.93/x
  3. Step 3: Cross multiply
    90,818.35x = 136,228.30 × 31,653.93
  4. Step 4: Simplify right side
    90,818.35x = 4,312,161,072.22
  5. Step 5: Solve for x
    x = 4,312,161,072.22/90,818.35
  6. Step 6: Final answer
    x = 47,481.17

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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.