Home / 85,159.83-127,739.10-21,974.58

Finding the Fourth Proportional to 85,159.83, 127,739.10 and 21,974.58

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Solution

The fourth proportional to 85,159.83, 127,739.10 and 21,974.58 is: 32,961.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,159.83 : 127,739.10 = 21,974.58 : x
  2. Step 2: Convert to fraction form
    85,159.83/127,739.10 = 21,974.58/x
  3. Step 3: Cross multiply
    85,159.83x = 127,739.10 × 21,974.58
  4. Step 4: Simplify right side
    85,159.83x = 2,807,013,072.08
  5. Step 5: Solve for x
    x = 2,807,013,072.08/85,159.83
  6. Step 6: Final answer
    x = 32,961.70

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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.