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Finding the Fourth Proportional to 158,454.84, 218,667.32 and 85,859.71

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Solution

The fourth proportional to 158,454.84, 218,667.32 and 85,859.71 is: 118,486.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,454.84 : 218,667.32 = 85,859.71 : x
  2. Step 2: Convert to fraction form
    158,454.84/218,667.32 = 85,859.71/x
  3. Step 3: Cross multiply
    158,454.84x = 218,667.32 × 85,859.71
  4. Step 4: Simplify right side
    158,454.84x = 18,774,713,257.69
  5. Step 5: Solve for x
    x = 18,774,713,257.69/158,454.84
  6. Step 6: Final answer
    x = 118,486.21

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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.