Home / 100,399.36-138,437.56-64,052.22

Finding the Fourth Proportional to 100,399.36, 138,437.56 and 64,052.22

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Solution

The fourth proportional to 100,399.36, 138,437.56 and 64,052.22 is: 88,319.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,399.36 : 138,437.56 = 64,052.22 : x
  2. Step 2: Convert to fraction form
    100,399.36/138,437.56 = 64,052.22/x
  3. Step 3: Cross multiply
    100,399.36x = 138,437.56 × 64,052.22
  4. Step 4: Simplify right side
    100,399.36x = 8,867,232,509.58
  5. Step 5: Solve for x
    x = 8,867,232,509.58/100,399.36
  6. Step 6: Final answer
    x = 88,319.61

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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.