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Finding the Fourth Proportional to 158,475.64, 218,694.54 and 85,877.08

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Solution

The fourth proportional to 158,475.64, 218,694.54 and 85,877.08 is: 118,509.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,475.64 : 218,694.54 = 85,877.08 : x
  2. Step 2: Convert to fraction form
    158,475.64/218,694.54 = 85,877.08/x
  3. Step 3: Cross multiply
    158,475.64x = 218,694.54 × 85,877.08
  4. Step 4: Simplify right side
    158,475.64x = 18,780,848,507.14
  5. Step 5: Solve for x
    x = 18,780,848,507.14/158,475.64
  6. Step 6: Final answer
    x = 118,509.37

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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.