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Finding the Fourth Proportional to 158,383.64, 218,508.54 and 90,404.40

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Solution

The fourth proportional to 158,383.64, 218,508.54 and 90,404.40 is: 124,723.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,383.64 : 218,508.54 = 90,404.40 : x
  2. Step 2: Convert to fraction form
    158,383.64/218,508.54 = 90,404.40/x
  3. Step 3: Cross multiply
    158,383.64x = 218,508.54 × 90,404.40
  4. Step 4: Simplify right side
    158,383.64x = 19,754,133,453.58
  5. Step 5: Solve for x
    x = 19,754,133,453.58/158,383.64
  6. Step 6: Final answer
    x = 124,723.32

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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.