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Finding the Fourth Proportional to 158,485.64, 218,319.56 and 135,750.56

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Solution

The fourth proportional to 158,485.64, 218,319.56 and 135,750.56 is: 187,001.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,485.64 : 218,319.56 = 135,750.56 : x
  2. Step 2: Convert to fraction form
    158,485.64/218,319.56 = 135,750.56/x
  3. Step 3: Cross multiply
    158,485.64x = 218,319.56 × 135,750.56
  4. Step 4: Simplify right side
    158,485.64x = 29,637,002,528.95
  5. Step 5: Solve for x
    x = 29,637,002,528.95/158,485.64
  6. Step 6: Final answer
    x = 187,001.19

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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.