Home / 100,322.64-138,444.48-55,000.08

Finding the Fourth Proportional to 100,322.64, 138,444.48 and 55,000.08

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Solution

The fourth proportional to 100,322.64, 138,444.48 and 55,000.08 is: 75,899.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,322.64 : 138,444.48 = 55,000.08 : x
  2. Step 2: Convert to fraction form
    100,322.64/138,444.48 = 55,000.08/x
  3. Step 3: Cross multiply
    100,322.64x = 138,444.48 × 55,000.08
  4. Step 4: Simplify right side
    100,322.64x = 7,614,457,475.56
  5. Step 5: Solve for x
    x = 7,614,457,475.56/100,322.64
  6. Step 6: Final answer
    x = 75,899.69

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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.