Home / 100,012.06-137,951.60-64,145.26

Finding the Fourth Proportional to 100,012.06, 137,951.60 and 64,145.26

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Solution

The fourth proportional to 100,012.06, 137,951.60 and 64,145.26 is: 88,478.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,012.06 : 137,951.60 = 64,145.26 : x
  2. Step 2: Convert to fraction form
    100,012.06/137,951.60 = 64,145.26/x
  3. Step 3: Cross multiply
    100,012.06x = 137,951.60 × 64,145.26
  4. Step 4: Simplify right side
    100,012.06x = 8,848,941,249.42
  5. Step 5: Solve for x
    x = 8,848,941,249.42/100,012.06
  6. Step 6: Final answer
    x = 88,478.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.