Home / 100,012.32-137,951.96-64,145.52

Finding the Fourth Proportional to 100,012.32, 137,951.96 and 64,145.52

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Solution

The fourth proportional to 100,012.32, 137,951.96 and 64,145.52 is: 88,479.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,012.32 : 137,951.96 = 64,145.52 : x
  2. Step 2: Convert to fraction form
    100,012.32/137,951.96 = 64,145.52/x
  3. Step 3: Cross multiply
    100,012.32x = 137,951.96 × 64,145.52
  4. Step 4: Simplify right side
    100,012.32x = 8,848,999,888.49
  5. Step 5: Solve for x
    x = 8,848,999,888.49/100,012.32
  6. Step 6: Final answer
    x = 88,479.10

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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.